Magnesium and Blood Pressure (BP): Does Magnesium Help with High Blood Pressure, Palpitations, and Atrial Fibrillation?

Introduction

Magnesium is an essential mineral that plays a critical role in many bodily functions - from energy production to heart rhythm regulation. In recent years, there's been growing interest in the connection between magnesium and cardiovascular health, especially regarding magnesium and blood pressure control and heart rhythm disorders. High blood pressure (hypertension) is extremely common (affecting about one in four adults in the UK [1]) and is a major risk factor for heart disease and stroke. At the same time, many people suffer from palpitations or irregular heartbeats, and atrial fibrillation (AFib) is one of the most prevalent heart rhythm disorders worldwide. Given these concerns, it's natural to wonder: can boosting your magnesium intake help with high blood pressure, reduce heart palpitations, or even prevent arrhythmias like AFib?

In this comprehensive article, we'll explore the evidence behind magnesium and BP regulation and its potential benefits for hypertension. We'll also discuss whether taking magnesium for high blood pressure is effective, and delve into how magnesium might influence heart palpitations and atrial fibrillation. We'll cover scientific research (including UK and international studies), expert guidelines (such as NHS recommendations in Britain), and practical tips on using magnesium safely. By the end, you should have a clear understanding of what magnesium can and cannot do for your blood pressure and heart rhythm, all presented in an expert yet approachable style.

Let's dive in.

Magnesium and High Blood Pressure (Hypertension)

Magnesium's relationship with blood pressure has been studied for decades. Researchers have observed that populations with higher magnesium intake often have lower rates of hypertension [2]. Magnesium is thought to help regulate blood pressure through multiple mechanisms. It helps blood vessels relax by modulating calcium and potassium levels in vascular muscle cells and by promoting nitric oxide, a natural vasodilator [2]. Magnesium may also reduce sympathetic "fight or flight" activity and dampen the release of stress hormones that raise blood pressure [2]. In essence, adequate magnesium levels help maintain a healthy tone in blood vessels and prevent excessive tightening that can drive blood pressure up. Given these effects, scientists have hypothesized that increasing magnesium intake might lower high blood pressure.

Magnesium levels and hypertension: Interestingly, people with high blood pressure often have lower magnesium levels than those with normal blood pressure. Studies show that magnesium deficiency (especially low intracellular magnesium) is more frequent in individuals with hypertension [2]. In fact, chronic latent magnesium depletion is quite common overall - by some estimates, about 25% or more of the U.S. population may have suboptimal magnesium levels [2] and this percentage may be even higher among hypertensive patients. One reason is that certain blood pressure medications, such as thiazide diuretics, actually cause the body to waste magnesium through urine, potentially worsening magnesium depletion [3]. This creates a vicious cycle: hypertension is associated with low magnesium, yet treating hypertension with diuretics can further lower magnesium. Ensuring adequate magnesium intake, therefore, is important for people with high blood pressure. It's no surprise that diets rich in magnesium (for example, the DASH diet high in fruits, vegetables, nuts, and whole grains) are linked to better blood pressure control [2].

Does magnesium supplementation lower blood pressure? A number of clinical trials have tested whether giving extra magnesium can reduce blood pressure in people with hypertension or prehypertension. Overall, the evidence indicates a modest but meaningful benefit. In 2016, a major meta-analysis pooled 34 randomized controlled trials (over 2,000 participants) and found that oral magnesium supplementation led to an average reduction of about 2 mmHg in systolic blood pressure and nearly 1.8 mmHg in diastolic blood pressure [4]. While that decrease may sound small, it was statistically significant suggesting a real physiological effect of magnesium on lowering blood pressure. Another analysis of 11 trials reported slightly larger drops (about 4 mmHg systolic and 2 mmHg diastolic on average) with magnesium doses around 365-450 mg/day [5]. Crucially, higher doses of magnesium and longer treatment durations seem to produce greater blood pressure reductions. An umbrella meta-analysis published in 2024 (reviewing multiple previous meta-analyses with over 8,600 total participants) confirmed that magnesium supplementation has a mild overall impact on blood pressure - roughly a 1-2 mmHg decrease in both systolic and diastolic readings on average [6]. However, in subgroup analysis, people who took at least 400 mg of magnesium per day for 3 months or more saw more substantial improvements: in that group, systolic blood pressure dropped by about 6.3 mmHg and diastolic by about 3.7 mmHg [6]. In other words, magnesium and hypertension appear to have an inverse relationship - the more magnesium (to a point), the better the blood pressure response. These findings led researchers to conclude that magnesium supplementation has a causal, albeit moderate, antihypertensive effect [4].

It's important to keep these numbers in perspective. A few millimeters of mercury reduction in blood pressure is helpful, but magnesium alone typically won't transform very high blood pressure into normal readings. Think of it as one piece of the lifestyle puzzle for managing hypertension - alongside other measures like reducing sodium, losing weight, exercising, and eating a balanced diet. In fact, experts often emphasize that magnesium for high blood pressure works best as part of a healthy diet. Magnesium-rich foods (leafy greens, nuts, seeds, whole grains, legumes, etc.) come packaged with other beneficial nutrients like potassium, fiber, and calcium that collectively support cardiovascular health [7]. Notably, too much sodium in the diet has a far greater impact on raising blood pressure than magnesium does on lowering it [7]. So while you pay attention to magnesium, be sure to also mind your salt intake and overall diet quality.

UK perspective: In the United Kingdom, health authorities encourage obtaining magnesium through a balanced diet rather than pills. The NHS recommends about 300 mg of magnesium per day for adult men and 270 mg for women as part of a healthy diet [8]. Most people can get this from foods like vegetables, nuts and whole grains. If you do choose to take a supplement, the NHS advises not to exceed 400 mg of magnesium from supplements daily, as high doses may cause side effects (like diarrhea) and the long-term safety of excess magnesium is unclear [8]. In fact, British dietary guidance does not endorse taking mineral supplements (including magnesium, calcium, or potassium) specifically to treat hypertension consuming more than you need can be harmful, and there isn't enough evidence that supplement pills significantly reduce blood pressure beyond what a good diet can do [1]. The preferred approach is to eat plenty of magnesium-rich foods as part of an overall heart-healthy diet, similar to the DASH or Mediterranean diet. The UK's National Health Service and organizations like the British Heart Foundation emphasize lifestyle changes (diet, salt reduction, exercise, weight control) as first-line strategies for blood pressure management, with supplements playing at most a supporting role.

That said, magnesium supplements are relatively inexpensive and generally safe for most people, so some doctors may recommend a trial of supplementation for patients with hypertension who have low-normal magnesium levels or who cannot get enough through diet. It's a simple intervention that might provide a small improvement in magnesium and BP outcomes. Always consult with your healthcare provider, however, before starting a magnesium supplement, especially since magnesium can interact with certain medications (for example, it can reduce absorption of some antibiotics if taken at the same time) and may not be advisable for people with kidney failure or severe kidney disease (because they cannot excrete excess magnesium efficiently). We'll discuss safety and dosing considerations in a later section, but first, let's turn to magnesium's effects on heart rhythm and palpitations.

Magnesium for Heart Palpitations

Heart palpitations are the feeling of a rapid, strong or irregular heartbeat. People describe palpitations as a fluttering, skipped beats, pounding or "flip-flopping" in the chest. Occasional palpitations can occur in healthy individuals due to stress, caffeine, or exercise, but sometimes they indicate an underlying arrhythmia (abnormal heart rhythm). Since magnesium is a key player in the electrical stability of heart cells, it makes sense that magnesium levels might affect palpitations and arrhythmias. In fact, one of the symptoms of magnesium deficiency is the development of abnormal heart rhythms or palpitations [3]. When magnesium levels fall too low, patients may experience muscle cramps, twitching, fatigue, and heart rhythm disturbances ranging from PVCs (premature ventricular contractions) to more serious arrhythmias [3]. Given this, it's reasonable to ask: can taking magnesium for palpitations help reduce those unsettling skipped beats or flutters?

Magnesium's role in cardiac rhythm: Magnesium is intimately involved in regulating heart muscle contractions and nerve impulses. It helps control the flow of other electrolytes like potassium and calcium in and out of cells, which in turn governs the heart's electrical activity. If you picture the heart's rhythm as an orchestra, magnesium is like a "conductor" ensuring all the ions (sodium, potassium, calcium) play in harmony. A magnesium imbalance can throw off that harmony, potentially leading to ectopic beats or rapid rhythms. This is why hospitals often check magnesium (and potassium) levels in patients who come in with arrhythmias or palpitations. The NHS notes that if you present with cardiac arrhythmia (irregular heartbeat), doctors may order a magnesium test to see if low magnesium could be a contributing factor [9]. Correcting a magnesium deficiency can sometimes calm the heart's electrical irritability and relieve palpitations, especially in those who were truly magnesium-deficient to begin with.

Evidence for magnesium reducing palpitations: There isn't a lot of large-scale clinical trial evidence focusing specifically on benign palpitations in otherwise healthy people. Much of what we know comes from studies in patients with known heart disease or arrhythmias. For example, one six-week randomized trial in patients with congestive heart failure (who often have frequent ventricular ectopic beats) found that oral magnesium supplementation significantly reduced the frequency of ventricular arrhythmias compared to placebo [3]. In that study, patients receiving magnesium had fewer asymptomatic PVCs, suggesting magnesium had a stabilizing effect on their heart rhythm [3]. This finding is encouraging, because PVCs (a common cause of palpitations) can be exacerbated by low magnesium and potassium.

Beyond specific trials, many doctors have reported anecdotal success in patients who suffer from benign palpitations (such as those related to stress or excessive caffeine) by recommending magnesium supplements. Magnesium's calming effect on the neuromuscular system may help ease the sensation of palpitations for some individuals. Additionally, if someone's palpitations are partly due to anxiety, magnesium's role in supporting a healthy nervous system might indirectly help as well (since magnesium has some mild natural calming and muscle-relaxant properties).

It's important to set appropriate expectations: magnesium and palpitations relief will depend on the cause of the palpitations. If your palpitations are caused by a serious arrhythmia like atrial fibrillation or supraventricular tachycardia, magnesium alone is unlikely to stop these episodes. However, if your palpitations are related to electrolyte imbalances, high stress, or stimulant use, magnesium might reduce their frequency or intensity. At the very least, correcting a low magnesium level is a simple step that can eliminate magnesium deficiency as a contributing factor. Cardiologists sometimes advise patients with benign palpitations or extra beats to ensure they have good magnesium (and potassium) intake, as a low level of either electrolyte can make the heart more "twitchy." For athletes or people who exercise heavily, this advice is also pertinent. Heavy exercise and sweating can lead to electrolyte loss, including magnesium. Some athletes report palpitations during periods of intense training ensuring adequate magnesium and other electrolytes may help prevent exercise-related palpitations. In one small pilot study of resistance exercise, magnesium supplementation helped attenuate the rise in blood pressure post-exercise and was hypothesized to aid recovery of heart rate as well [10], highlighting magnesium's supportive role in cardiovascular response to exercise. While research on magnesium and BP during exercise is ongoing, it stands to reason that athletes benefit from magnesium for both performance and heart rhythm stability [11].

Practical considerations: If you experience bothersome palpitations, it's wise to discuss it with your doctor to rule out any serious causes. Assuming cardiac tests are normal and no specific arrhythmia is identified (e.g., your palpitations are benign PACS/PVCs or related to anxiety), you might consider a trial of magnesium supplementation. Magnesium glycinate or magnesium citrate are often recommended forms for this purpose, as they tend to be better absorbed and easier on the stomach (more on supplement forms later). Many people take about 200-400 mg of magnesium in the evening to help with palpitations that are worse at night, for example. Magnesium for palpitations is generally safe in healthy individuals, but always adhere to dosing guidelines (since excessive magnesium can cause diarrhea or, in extreme cases, more serious side effects). And remember, if your palpitations persist or worsen, follow up with a healthcare provider. Magnesium is not a magic cure-all, but rather one supportive measure that can contribute to a normally steady heartbeat.

Magnesium for Atrial Fibrillation (AFib)

Atrial fibrillation is a specific type of arrhythmia where the upper chambers of the heart (atria) quiver or beat irregularly, leading to an irregular and often rapid pulse. AFib can cause palpitations, dizziness, shortness of breath, and increases stroke risk if not managed. Because magnesium is used in hospitals to manage certain acute arrhythmias, there has been considerable interest in magnesium for AFib both for acute treatment and for prevention of recurrent episodes. Here we'll break down what the research says about magnesium's role in atrial fibrillation.

Magnesium in acute AFib management: In emergency settings or during acute episodes of atrial fibrillation with very fast heart rates (a condition often called "AFib with RVR" rapid ventricular response), intravenous magnesium sulfate is sometimes given as part of the treatment. Clinical studies have demonstrated that IV magnesium can be a helpful adjunct to standard medications for controlling the heart rate in AFib. A meta-analysis of 5 randomized trials (380 patients) found that patients receiving IV magnesium were about 3 times more likely to achieve rate control (heart rate <100 bpm) within the first 24 hours compared to those who didn't get magnesium [12] [13]. In practical terms, adding magnesium to the usual care (such as beta-blockers or diltiazem) improved the chances of bringing a fast AFib under control with an odds ratio of roughly 2.5 for attaining rate control, and an absolute improvement such that the number needed to treat (NNT) was 4 (meaning for every 4 AFib patients given magnesium, 1 extra patient achieves rate control who wouldn't have otherwise) [13]. Magnesium also showed a modest benefit in promoting conversion to normal rhythm (sinus rhythm), though its effect on converting AFib to sinus is less dramatic than its effect on slowing the heart rate [13]. The good news is that IV magnesium in these trials did not increase risk of serious side effects - no significant increase in bradycardia (overly slow heart rate) or low blood pressure was seen [13]. The main side effect was flushing in a minority of patients, a generally mild and self-limited issue [13]. These findings align with what emergency physicians and cardiologists have observed anecdotally: magnesium given IV can calm an overactive heart in AFib and is a reasonably safe therapy when used appropriately [3]. As a result, current guidelines consider magnesium infusion as a useful adjunct for rate control in acute atrial fibrillation, especially if there is suspicion of an underlying electrolyte deficiency.

However, it's important to clarify that magnesium is not a primary drug to convert AFib to normal rhythm (chemical cardioversion). Agents like anti-arrhythmic drugs or electrical cardioversion are far more effective for terminating AFib. Magnesium's role is supportive it helps optimize the internal environment of the heart to facilitate whatever primary treatment is being used. If your magnesium is low, an AFib episode may be harder to terminate; if magnesium is normal/high, your heart may respond better to medications. This is why doctors often check and replete magnesium in patients with AFib. Magnesium "calms" the electrical activity to some degree, which can slow the ventricular rate (as noted) and may reduce the propensity for arrhythmia triggers.

Magnesium for AFib prevention: A fascinating area of research is whether maintaining higher magnesium levels can prevent atrial fibrillation from occurring in the first place. We have some clear evidence that in certain settings, magnesium helps prevent AFib. For instance, magnesium supplementation is commonly used to prevent AFib after cardiac surgery. After procedures like open-heart surgery or coronary bypass, patients often develop AFib (in about 20-50% of cases post-operatively). Multiple studies including a Cochrane review of randomized trials have shown that giving IV magnesium around the time of heart surgery significantly reduces the incidence of post-operative atrial fibrillation [14]. One analysis found magnesium supplementation cut the odds of post-surgery AF or other supraventricular arrhythmias nearly in half (odds ratio ~0.55) compared to placebo [14]. This is a robust effect and has made magnesium an accepted prophylactic therapy in that context. It's worth noting this practice is also common in the UK; for example, a British cardiac surgery team would often include magnesium infusions as part of the post-op care protocol to lessen arrhythmia risk, in line with international standards.

What about preventing AFib in the general community, not just after surgery? This is where research is still evolving. Observational studies have provided intriguing clues. Several large studies have found an association between low magnesium levels and higher risk of developing AFib over time [14]. In fact, three prospective studies noted that individuals in the lowest quartile of serum magnesium were 35-50% more likely to develop atrial fibrillation compared to those in the highest magnesium quartile, even after adjusting for other factors [14]. That suggests a potential causal link - low magnesium might predispose people to AFib. There's even a remarkable case series where researchers put healthy volunteers on a magnesium-deficient diet: in one trial, 3 out of 14 women fed a severely low-magnesium diet actually developed AFib that resolved quickly once magnesium was replenished [14]. This small experiment shows how profound magnesium deficiency can directly provoke arrhythmias in some cases.

To formally test magnesium's preventative power, researchers are conducting trials of oral magnesium supplements in people at risk for AFib. A pilot randomized trial in the U.S. investigated giving healthy older adults 400 mg of magnesium oxide daily to see if it would reduce the burden of atrial ectopic beats (PACS), which are often a precursor to AFib [14]. The study found the supplement did raise magnesium levels modestly and was well tolerated (aside from minor gastrointestinal upset in some), but in that small sample it did not significantly decrease the number of premature atrial contractions compared to placebo [14]. Nonetheless, compliance was good and the trial demonstrated feasibility for a larger study [14]. The authors concluded that a bigger trial is warranted to see if magnesium for atrial fibrillation prevention will bear fruit [14]. Such a trial would follow participants over a longer time to measure if fewer people in the magnesium group go on to develop AFib. As of now (2025), we are still awaiting clear answers from large-scale trials on primary prevention of AFib with magnesium.

Bottom line on AFib: Maintaining normal magnesium levels is an important part of overall management for atrial fibrillation, but magnesium is not a standalone cure or highly potent intervention for chronic AFib. If you have AFib, your doctor will typically check your magnesium (and potassium) as part of your blood work. If your magnesium is low, supplementation will be recommended not because it will magically stop the AFib, but because not correcting it could make controlling your AFib more difficult [15]. Think of it this way: magnesium is a supportive therapy and preventive factor, but not a primary treatment for AFib. In AFib patients, keeping magnesium in the normal range can assist in maintaining a regular rhythm indirectly and may improve response to medical therapies. For acute episodes, IV magnesium can be quite useful to slow a racing heart. For long-term rhythm maintenance, magnesium by itself has not proven capable of preventing AFib recurrences in most cases, but it might reduce the risk or frequency when used alongside other treatments (especially if it addresses a previously unrecognized deficiency). Moreover, magnesium's benefits on blood pressure, glucose control, and overall heart health could indirectly lower AFib risk, since hypertension, diabetes, and heart disease are risk factors for atrial fibrillation [15].

Before moving on, one more note: If you are in the UK with AFib, you might be interested to know that the NHS and NICE guidelines don't list magnesium supplements as a routine part of AFib management, but UK clinicians will certainly correct low magnesium in AFib patients as part of good practice. The UK's National Institute for Health Research (NIHR) has been involved in funding studies on preventive strategies for AFib and other cardiovascular conditions, including lifestyle and nutritional interventions. While we await more evidence, ensuring you get enough magnesium (through diet or supplements if needed) is a sensible component of self-care for anyone with AFib, alongside taking any prescribed medications (rate/rhythm controllers and anticoagulants) and managing risk factors like blood pressure.

Getting Enough Magnesium: Diet, Supplements, and Safety

Now that we've examined how magnesium may aid high blood pressure, palpitations, and AFib, it's important to discuss the practical aspects of magnesium intake. How can you safely get the right amount of magnesium, and what do health experts recommend?

Dietary sources of magnesium: The ideal way to obtain magnesium is through a balanced diet. Plenty of common foods are rich in magnesium. Green leafy vegetables (like spinach, kale, Swiss chard) are excellent sources, as are nuts (almonds, cashews, peanuts), seeds (pumpkin seeds, chia seeds), legumes (beans, lentils, edamame), and whole grains (brown rice, whole wheat, oats). Even dark chocolate, avocado, bananas, and yogurt contribute magnesium. Eating a variety of these foods throughout the day can easily provide the recommended 300-400 mg of magnesium for most adults. A diet high in natural foods automatically tends to be high in magnesium and potassium and lower in sodium - all factors that benefit blood pressure. In contrast, highly processed diets (fast food, low in vegetables) often lack magnesium and potassium while being high in sodium, a recipe that can promote hypertension. It's quite telling that the magnesium and hypertension link often comes back to overall diet quality. Magnesium-rich foods like leafy greens, nuts, seeds, bananas, yogurt, and avocados provide natural sources of this mineral.

Health guidelines in the UK (NHS) and elsewhere encourage getting magnesium from a nutritious diet rather than relying on supplements, as these foods also deliver potassium, fiber, and other nutrients beneficial for blood pressure and heart health [1]. If you reside in the UK, you might be familiar with the Eatwell Guide or NHS nutrition advice which emphasizes getting nutrients through food. According to the NHS, "you should be able to get all the magnesium you need by eating a varied and balanced diet" [8]. There's a recognition that many people (around half of Americans, and likely a significant fraction of Brits as well) do not meet the estimated magnesium requirements from diet [2] [17]. Modern diets sometimes fall short in magnesium, which has led researchers to label magnesium a "shortfall nutrient." If you suspect your diet is lacking, focusing on magnesium-rich whole foods is a great first step.

Magnesium supplements: Supplements can be useful in certain scenarios - for example, if you have a documented magnesium deficiency, or have conditions that predispose to low magnesium (such as Crohn's disease, celiac, uncontrolled diabetes, or chronic diuretic use). They can also be considered for individuals with hypertension or arrhythmias who want to ensure optimal magnesium status, in consultation with their doctor. Common forms of magnesium supplements include magnesium oxide, citrate, glycinate, chloride, and sulfate (Epsom salts, usually used for soaking). Magnesium oxide has the highest elemental magnesium per pill but is not as well absorbed and more likely to cause diarrhea. Chelated forms like magnesium citrate, magnesium aspartate, or magnesium glycinate tend to be better absorbed and gentler on the gut [15]. In the context of blood pressure or heart rhythm, there isn't conclusive evidence that one form is far superior to others, but many experts prefer magnesium taurate or glycinate for heart health due to good absorption and tolerability (taurate also theoretically could benefit the heart by the taurine content, though that's more speculative).

Dose and safety: A typical supplemental dose for an adult might be 200 mg to 400 mg of elemental magnesium per day. Doses in the higher end (400 mg or slightly above) were used in some blood pressure studies and were effective [6], but keep in mind that taking more than 400 mg at once, especially as magnesium oxide or sulfate, often results in diarrhea. It's actually a fine line - magnesium is a common ingredient in laxatives (milk of magnesia is magnesium hydroxide, for instance). If you experience loose stools, you can split the dose (morning and evening) or switch to a slow-release formulation. Slow-release or sustained-release magnesium pills distribute the magnesium uptake over time and can minimize gastrointestinal side effects [15]. Always start at the low end and see how you tolerate it.

For most people with normal kidney function, excess magnesium is efficiently excreted by the kidneys. Magnesium overdose from oral supplements is rare as long as the kidneys are healthy - you'd usually get diarrhea long before anything dangerous. However, in people with kidney failure or severe renal impairment, magnesium can accumulate to toxic levels, since the kidneys can't clear it. This can lead to serious complications like muscle weakness, lethargy, difficulty breathing, extremely low blood pressure, or even cardiac arrest in extreme cases. Therefore, individuals with kidney disease should only take magnesium supplements under medical supervision. As the American Family Physician journal points out, magnesium is generally safe at appropriate doses but "should be used with caution in patients with kidney disease" because it is excreted renally [3]. Patients with advanced kidney disease are usually advised to avoid magnesium supplements and even limit high-magnesium foods to prevent hypermagnesemia.

Another scenario to be cautious is if you have a heart condition called heart block or certain bradyarrhythmias very high magnesium levels can worsen those conditions by further slowing electrical conduction. That's why hospital protocols often say to avoid IV magnesium in patients with high-grade AV block unless they have a pacemaker [16]. That level of detail is beyond general supplementation, though ordinary supplement use won't create those high serum levels unless kidneys fail.

Magnesium can interact with some medications. For example, it can bind to tetracycline or fluoroquinolone antibiotics in the gut, reducing their absorption (so you need to separate the timing if you're on those). It also can add to the blood pressure-lowering effect of medications, theoretically risking too low BP or too slow heart rate if combined with, say, certain calcium channel blockers or beta blockers - but in practice this is usually not a big issue and is even desired (e.g., magnesium with a beta blocker in AFib to control rate better). Still, it's wise to let your doctor or pharmacist know if you start magnesium so they can advise on any interactions with your specific meds. Magnesium supplements may also slightly interfere with the absorption of oral bisphosphonates (for osteoporosis) or levothyroxine (for thyroid), so spacing them a few hours apart is recommended. In the UK, the Department of Health and Social Care advises that taking 400 mg or less of magnesium from supplements is unlikely to cause any harm, but taking high doses (>400 mg) for long periods could lead to issues like diarrhoea [8]. If you do experience diarrhea or cramping on magnesium, cut back the dose. There's no benefit to pushing the dose to massive levels - your goal is simply to ensure you're replete. Once your magnesium status is adequate, taking more won't further lower your blood pressure or magically cure palpitations. In fact, your body will just eliminate the surplus (or you'll be running to the toilet!).

Monitoring magnesium status: There isn't a routine recommendation to check magnesium levels in everyone, but it might be checked if you have difficult-to-control blood pressure or known heart rhythm issues. A blood magnesium test (serum magnesium) can be done, but note that serum levels may not reflect total body magnesium accurately. You can have normal serum magnesium yet still be low intracellularly. Some experts argue the lower reference limit for serum magnesium used by labs is set too low and that many "normal" people are actually magnesium-deficient [2]. Generally, a serum magnesium under about 0.75 mmol/L (1.8 mg/dL) would be considered definitively low by most labs, whereas optimal might be around 0.85-0.95 mmol/L (2.1-2.3 mg/dL). In the end, if you eat a wholesome diet and perhaps take a moderate supplement, you'll likely ensure you're in a good range. And as we've seen, being in that good range may help a bit with blood pressure and will support normal heart rhythm.

Let's pull everything together and then answer some frequently asked questions on this topic.

Summary: Magnesium is a crucial mineral for maintaining healthy blood pressure and a steady heartbeat. While it's not a substitute for blood pressure medications or specific arrhythmia therapies when those are needed, maintaining adequate magnesium can provide supportive benefits. Magnesium supplementation tends to produce small reductions in blood pressure (especially in those who are magnesium-deficient or have uncontrolled hypertension), and it is one of several lifestyle factors that can aid blood pressure control. For heart palpitations and AFib, magnesium plays a preventive and adjunctive role - it can reduce ectopic beats in some cases and is used acutely to help manage AFib in the hospital, though it's not a cure for chronic arrhythmias. Always prioritize a magnesium-rich diet and use supplements wisely and safely.

Next, we address some common questions you might have about magnesium and these health issues.

Frequently Asked Questions (FAQ)

Q: Does magnesium lower blood pressure?

A: Yes, magnesium has been shown to contribute to lower blood pressure, but the effect is usually modest. Meta-analyses of clinical trials find that magnesium supplementation can reduce blood pressure by around 2-4 mmHg on average [4] [5]. For example, taking roughly 350-400 mg of magnesium daily for a few months led to a small but significant drop in both systolic and diastolic blood pressure in adults with high blood pressure [4]. Higher doses (e.g. ≥400 mg/day) might produce a slightly larger reduction (some studies saw ~5-6 mmHg systolic reduction with higher doses) [6]. While this blood pressure lowering effect is real, it's not as powerful as prescription blood pressure medications. Think of magnesium as a supportive therapy - it helps relax blood vessels and improve mineral balance, which can gently lower blood pressure. If your blood pressure is only mildly elevated or you are on the cusp of hypertension, magnesium (along with other lifestyle changes) could be enough to help. But if you have significant hypertension, you will likely need additional interventions. Always work with your doctor to monitor your blood pressure; magnesium supplementation can be one part of a comprehensive plan to manage hypertension.

Q: Should I take magnesium for high blood pressure, and how much?

A: It depends on your individual situation. Many people with high blood pressure can benefit from ensuring they get enough magnesium, primarily through diet. If your diet is rich in vegetables, fruits, nuts, and whole grains, you may already be getting plenty (the recommended intake is ~300-400 mg per day for adults). If you have high blood pressure and your dietary magnesium is low, magnesium supplementation of around 200-400 mg daily is a reasonable thing to discuss with your healthcare provider. Studies that showed a benefit for blood pressure typically used doses in that range (often ~350 mg/day) [4]. It's wise to start at perhaps 200 mg daily and see how you tolerate it (since magnesium can cause loose stools in some people). The NHS advises not to exceed 400 mg from supplements per day to avoid side effects [8]. So, you might take 200 mg in the morning and 200 mg in the evening with meals, for instance. Choose a well-absorbed form like magnesium citrate or glycinate if possible. Remember that magnesium is just one tool - you should also be reducing excess salt, eating potassium-rich foods, exercising, etc., to tackle high blood pressure. If you're already on blood pressure medication, adding magnesium might further improve your numbers slightly, but do not stop your meds just because you start magnesium. Always coordinate any supplement use with your doctor, especially if you're on multiple meds, to ensure there are no contraindications.

Q: Can magnesium help with heart palpitations?

A: Magnesium can help with certain types of palpitations, particularly if those palpitations are related to stress, electrolyte imbalances, or mild arrhythmias like premature beats. Many people report that taking magnesium supplements or increasing magnesium in their diet reduces the frequency of their palpitations. Magnesium's calming effect on the heart's electrical system can prevent extra beats from firing as easily. If your palpitations are due to magnesium deficiency, then magnesium supplementation can be very effective it essentially fixes the root cause. Even if you're not severely deficient, extra magnesium might still have a stabilizing effect. There was a clinical trial in heart failure patients that showed oral magnesium reduced ventricular arrhythmias (a kind of palpitation) [3], and magnesium is known to reduce palpitations and irregular heart rhythms in various settings [3]. However, it's important to manage expectations: if you have palpitations due to a specific heart rhythm problem (like supraventricular tachycardia or AFib), magnesium alone usually won't stop those; you'll need targeted medical treatment. But for benign palpitations - those skipped beats you feel once in a while, or flutters associated with anxiety magnesium is a sensible remedy to try. It's relatively safe, and it addresses one common trigger of palpitations (low magnesium). Always get new or severe palpitations evaluated by a doctor first to rule out anything serious. If everything checks out, a trial of, say, 300 mg of magnesium daily for a month might be worthwhile to see if your symptoms improve.

Q: Is magnesium good for atrial fibrillation (AFib)?

A: Magnesium is beneficial in a supportive way for atrial fibrillation, but it's not a standalone cure or highly potent treatment for chronic AFib. In acute settings (like if you go to A&E with a new AFib episode), IV magnesium can be given to help slow a rapid heart rate and support conversion to normal rhythm in conjunction with other medications [3] [13]. It's considered a useful adjunct therapy in that scenario. For long-term management, maintaining adequate magnesium might reduce triggers for AFib and is generally part of good heart health. Some research suggests that people with higher magnesium levels have a lower risk of developing AFib [14]. Magnesium is also used to prevent AFib after cardiac surgery [14]. However, if you already have AFib, taking a magnesium supplement will not typically make the arrhythmia disappear. It may help keep your heart rate under control and ensure your heart isn't irritated by a deficiency, but you will likely still need other treatments (like rate control drugs, rhythm control strategies, or ablation, depending on your case). Many doctors do recommend AFib patients take magnesium or eat a high-magnesium diet because it's low-risk and might help with overall cardiac function. In summary, magnesium is "good" for AFib in that it supports normal heart rhythm and should be part of a heart-healthy regimen, but it's not a definitive therapy for AFib on its own. Always follow your cardiologist's advice on managing AFib; think of magnesium as one component of your lifestyle management of the condition.

Q: What type of magnesium supplement is best for high blood pressure and heart health?

A: The "best" type of magnesium often comes down to absorption and tolerance. Magnesium citrate and magnesium glycinate are two forms that are well-absorbed and cause relatively less gastrointestinal upset. Magnesium glycinate is gentle on the stomach and a good all-around choice, including for those who might also benefit from the calming effect (glycinate is attached to glycine, a calming amino acid). Magnesium citrate is commonly available, absorbed decently, but in higher doses can have a laxative effect (it's actually sold as a saline laxative in large volumes). Magnesium taurate is another form some cardiology-focused nutritionists like, as taurine itself is heart-friendly and this form might help with blood pressure and arrhythmias, though hard evidence is sparse. Magnesium oxide is very common and cheap, but it's less absorbed (only a small fraction of its magnesium gets into the body) and more likely to cause diarrhea - it's okay for those with constipation, but not the most efficient for raising magnesium levels. Magnesium chloride and magnesium lactate are also well-absorbed forms found in some supplements. In truth, magnesium and BP improvements don't seem to differ hugely by form - what matters is getting enough elemental magnesium into your system. So choose a form you tolerate well. If one gives you diarrhea, try another. Also consider sustained-release formulations, which several studies have used effectively; these release magnesium slowly and tend to minimize side effects [15]. For dosage, as discussed, around 300-400 mg of elemental magnesium daily is a typical target if you're supplementing for blood pressure or heart rhythm support.

Q: Are there any side effects or risks to taking magnesium?

A: In healthy individuals, magnesium supplements are generally very safe, with minimal side effects. The most common side effect is diarrhea or loose stools, especially with higher doses or certain forms (like magnesium oxide or magnesium citrate). Some people may also experience minor stomach cramping or nausea if they take too much at once. These side effects can often be eliminated by reducing the dose, splitting the dose, or switching the form of magnesium. Taking magnesium with meals can improve tolerance as well. There are a few precautions: if you have kidney disease, you should not take magnesium supplements without medical supervision, because impaired kidneys may not clear magnesium efficiently, leading to a risk of magnesium accumulation (which in worst cases can cause lethargy, weakness, trouble breathing, low blood pressure, or heart disturbances). This is mostly a concern in those with advanced kidney failure; people with normal kidneys handle excess magnesium by excreting it [3]. Another theoretical risk is taking super-high doses (thousands of milligrams) which could cause magnesium toxicity even in healthy people - but that's unlikely if you stick to the commonly recommended doses (200-400 mg range). Magnesium can also lower blood pressure a bit, which for most hypertensive people is a good thing, but if you are prone to low blood pressure or on multiple BP meds, just be mindful and maybe monitor your blood pressure when starting magnesium to ensure it doesn't drop too much. One interesting thing to note: magnesium can cause a sensation of warmth or flushing when given intravenously (like a hot flash). Orally, this doesn't happen, except that some people feel very relaxed/sleepy with magnesium (it can have a mild sedative effect). This is why some take it at night to aid sleep. This isn't a dangerous side effect, but rather a bonus for those with insomnia. Finally, always ensure you're taking a quality supplement from a reputable brand - in the UK, look for products that have been tested or have the USP or NSF certification if possible, or ask a pharmacist. Magnesium supplements are pretty straightforward, but quality can vary. In summary, the risks are low and side effects are usually limited to the gut. When used at recommended doses, magnesium is a safe supplement for the vast majority of people.

Q: What do UK health agencies say about magnesium for blood pressure or heart problems?

A: UK guidelines (such as those from the NHS or NICE) do not explicitly recommend magnesium supplements as a treatment for high blood pressure or heart rhythm problems, mainly due to insufficient evidence to make it a formal recommendation. The NHS's stance is that you should get magnesium through a healthy diet and that routine supplementation isn't necessary for most people [8]. The British Heart Foundation and Blood Pressure UK focus more on proven lifestyle interventions (salt reduction, weight management, exercise, balanced diet including fruits & veg) for blood pressure control. They would view magnesium supplements as optional - something you might try as an addition to standard advice if your doctor approves. As mentioned earlier, NHS patient info indicates that taking mineral supplements like magnesium solely to reduce blood pressure is not generally recommended, and excess supplementation could even be harmful [1]. Instead, UK dietitians would say eat more magnesium-rich foods (which parallels increasing potassium and fiber intake) as part of your hypertension diet plan. For atrial fibrillation, NICE guidelines for AF management include rate control, rhythm control, and stroke prevention; they don't list magnesium supplements as a treatment. However, UK hospitals do use intravenous magnesium in acute settings (e.g., for torsades de pointes, a dangerous arrhythmia, and sometimes for rapid AFib, similar to practice elsewhere). The NIHR has funded research in areas of nutrition and heart disease, and while I'm not aware of a specific NIHR study solely on magnesium and AFib or hypertension, the continuous interest means we might see more UK-based research on this in the future. In general, if you ask a GP in the UK about magnesium, you're likely to be told: "You can take it if you want, it might help a bit especially if your levels are low, but focus on healthy lifestyle first." Always consult your doctor, but don't be surprised if they say something along those lines. Magnesium just isn't front-and-center in official guidelines yet, mainly because of the relatively small effect sizes in studies. That said, it remains a topic of research and many forward-thinking practitioners do pay attention to their patients' magnesium status as part of holistic cardiovascular care.

Q: Can I take magnesium alongside my blood pressure or heart medications?

A: In most cases, yes magnesium is often compatible with blood pressure medications and common heart medications, but you should do so with some knowledge and timing considerations. Magnesium itself can lower blood pressure a bit, so if you take it alongside antihypertensive drugs (like ACE inhibitors, ARBs, calcium channel blockers, diuretics, beta-blockers), the combined effect might lower your BP slightly more than expected. This usually isn't dangerous; in fact, it might be beneficial. But it's wise to monitor your blood pressure to ensure it doesn't go too low, especially when you first start magnesium. Regarding arrhythmia medications, magnesium is frequently given with standard drugs in the hospital. For example, it's given with digoxin or with beta-blockers to help rate control in AFib [13]. So there's precedent that they work together. One caution is if you are on a medication that can slow the heart or prolong something called the PR interval (some calcium channel blockers, for instance), adding magnesium (which in extreme doses can slow heart conduction) could theoretically compound that. However, at supplementation doses, this is rarely an issue. The main interactions to be mindful of are with certain oral medications where magnesium can interfere with absorption. These include: thyroid hormone pills (levothyroxine), certain osteoporosis meds (bisphosphonates like alendronate), and some antibiotics (tetracyclines like doxycycline, and fluoroquinolones like ciprofloxacin). The magnesium can bind these drugs in the gut and prevent full absorption. The solution is simple - separate the timing. Take your magnesium supplement at least 2 hours apart from those medications (for example, take your thyroid pill in the morning, and magnesium in the afternoon or evening). If you're on an iron supplement, that's another one to separate from magnesium, as they can affect each other's absorption. Always read the leaflet that comes with your meds or ask a pharmacist about supplement interactions. But to reassure: magnesium does not have any severe or dangerous interaction with standard blood pressure or heart rhythm drugs in the way that, say, grapefruit juice does with certain meds. In fact, sometimes doctors intentionally use both (like giving magnesium and a potassium-sparing diuretic together in difficult hypertension cases, or magnesium and amiodarone together in arrhythmia). Just keep your healthcare providers informed about all supplements you take.

Q: How long does it take for magnesium to affect blood pressure or palpitations?

A: Magnesium's effects can be quite rapid for some things, and more gradual for others. If you are magnesium-deficient and you start supplementing, your blood pressure could start improving within a few weeks as your body stores are replenished. In clinical studies, significant blood pressure changes were often observed after about 8-12 weeks of consistent magnesium supplementation [4]. Some small reductions might be seen earlier, but give it at least a month or two to see measurable changes in BP (and be sure to measure under consistent conditions). For palpitations, people sometimes notice improvements faster - even within days if magnesium was the missing piece. For example, someone who gets frequent benign PVCs might feel a reduction in those extra beats after a week or two of taking magnesium regularly. It depends on individual differences and what's causing the palpitations. In acute medical settings, magnesium works within minutes: an IV infusion can slow a rapid heart rate in AFib within 15-30 minutes, and can quell a dangerous ventricular arrhythmia almost immediately in the case of torsades de pointes [3]. Orally, it's slower because it has to absorb through the gut. Generally, oral magnesium reaches a steady level in the body after a couple of days of regular dosing. One pilot study showed that after 3 months of magnesium supplementation, serum magnesium had risen by about 0.07 mEq/L versus placebo [14] which indicates the body's levels do change with sustained intake. So for blood pressure or chronic issues, think in terms of weeks to months for full effect. For an acute cramp or palpitation, some people take a one-time extra dose of magnesium (like magnesium glycinate before bed) and feel a calming effect that night. So there is an acute relaxation effect that can occur, but the blood pressure changes take more ongoing use.

Q: Can I get enough magnesium from diet alone, or do I need a supplement?

A: It is definitely possible to get enough from diet alone - many people do. If you eat a diet rich in plant-based foods, you're probably meeting the requirements. For instance, a cup of cooked spinach has ~150 mg of magnesium, an ounce of almonds ~75-80 mg, a cup of black beans 120 mg, a banana ~30 mg, etc. Add those up over a day and you can reach 300-400 mg without too much trouble. The challenge is when people eat a lot of processed foods, white bread instead of whole grain, few fruits/veg, etc., their magnesium intake may be subpar. Surveys have found a large portion of the population in both the US and UK consumes less than the recommended magnesium amount [2] [17]. So it depends on your dietary habits. If you prefer to avoid pills and you're willing to adjust your eating, you absolutely can improve your magnesium status by diet. Foods high in magnesium are typically very healthy foods anyway, so you'll get multiple benefits (for blood pressure, for weight, for cholesterol, etc.). Consider incorporating at least a few high-magnesium foods each day: e.g., a handful of nuts as a snack, some leafy greens or beans with your meals, whole grain versions of starches, maybe a piece of dark chocolate for dessert - and perhaps swap out some meat for legumes a couple times a week. If despite your best efforts your diet falls short, or if you have particularly high needs (like athletes in heavy training, or certain medical conditions), a supplement is a convenient way to ensure adequacy. Also, some people who eat well might still choose to supplement with a low dose (like 100-200 mg) "just in case," since magnesium supplements are inexpensive and low-risk. But it isn't mandatory if your diet is truly providing enough. One way to know is to track your food intake for a few days using a nutrition app or consult with a dietitian you might be surprised how much or how little magnesium you're getting. Also, note that magnesium absorption can be inhibited by excessive intake of calcium or zinc at the same time, and by gastrointestinal issues. So even diet isn't 100% foolproof if other factors are at play. In short: try to food-first approach; use supplements as a secondary boost if needed.

Q: What other benefits does magnesium have for health (besides BP and heart rhythm)?

A: Magnesium is a true multi-tasker in the body, so it has numerous health benefits. We focused on blood pressure, palpitations, and AFib here, but magnesium also plays roles in: muscle function (preventing cramps and spasms), nerve function (it can ease headaches and migraines for some people, and is being studied for anxiety/depression relief), blood sugar regulation (magnesium is involved in insulin action and many people with type 2 diabetes are magnesium-deficient; supplementation can improve insulin sensitivity modestly), bone health (magnesium, along with calcium and vitamin D, is important for bone density), and more. It's been linked to a lower risk of metabolic syndrome and stroke in observational studies [18] [19]. Magnesium is also famously used in obstetrics magnesium sulfate IV is the treatment of choice for pre-eclampsia/eclampsia (dangerously high blood pressure in pregnancy with seizures) [3], highlighting how powerful its blood pressure and nervous system effects can be in certain conditions. Furthermore, magnesium is used in treating asthma exacerbations (IV magnesium can bronchodilate in severe asthma attacks) [3], and it's being looked at for improving sleep quality because of its relaxing properties. Athletes sometimes supplement magnesium to aid recovery and reduce muscle soreness. So, it's not just about the heart and blood pressure - magnesium supports hundreds of biochemical reactions. Ensuring you have enough magnesium can positively influence your energy levels, mood, sleep, muscle comfort, and more. It's one reason magnesium is often called the "forgotten electrolyte" it doesn't always get as much spotlight as calcium or potassium, but it's equally crucial for well-being [2].

In conclusion, magnesium is a valuable nutrient for cardiovascular health. Magnesium blood pressure research suggests a small lowering effect, which can contribute to better hypertension control. Using magnesium for palpitations is a common natural approach that may ease those unsettling heart flutters, particularly when they are benign. And while magnesium for AFib isn't a cure, it's an important supportive strategy both in acute care and potentially in prevention. Always remember to balance supplementation with a healthy diet and lifestyle. The UK's NHS and other health authorities will always emphasize diet first, and that's sound advice. Magnesium-rich foods are widely available and bring many health perks. So, whether you sprinkle some extra spinach on your plate or take a magnesium supplement at bedtime, you could be doing your heart and blood pressure a favor. Always consult with a healthcare professional if you have any existing health conditions or are on medications before making big changes or starting supplements. Here's to a heart-healthy life with adequate magnesium in the mix!

References

1. Royal United Hospitals Bath NHS. Hypertension and diet (food fact sheet) [Internet]. Bath (UK): RUH NHS; [cited 2025 Aug 5]. Available from: https://www.ruh.nhs.uk/patients/patient_information/external_leaflets/DTT_Hypertension_and_diet.pdf
   (Back to text)
2. AlShanableh Z, Ray EC. Magnesium in hypertension: mechanisms and clinical implications. Front Physiol. 2024;15:1363975. [Internet]. [cited 2025 Aug 5]. Available from: https://doi.org/10.3389/fphys.2024.1363975
   (Back to text)
3. Guerrera MP, Volpe SL, Mao JJ. Therapeutic uses of magnesium. Am Fam Physician. 2009;80(2):157–162. [Internet]. [cited 2025 Aug 5]. Available from: https://www.aafp.org/pubs/afp/issues/2009/0715/p157.html
   (Back to text)
4. Zhang X, Li Y, Del Gobbo LC, Rosanoff A, Wang J, Zhang W, et al. Effects of magnesium supplementation on blood pressure: a meta-analysis of randomized double-blind placebo-controlled trials. Hypertension. 2016;68(2):324–333. [Internet]. [cited 2025 Aug 5]. Available from: https://doi.org/10.1161/HYPERTENSIONAHA.116.07664
   (Back to text)
5. Dibaba DT, Xun P, Song Y, Rosanoff A, He K. The effect of magnesium supplementation on blood pressure: a systematic review and meta-analysis of randomized trials. J Clin Hypertens (Greenwich). 2017;19(8):833–841. [Internet]. [cited 2025 Aug 5]. Available from: https://doi.org/10.1111/jch.12901
   (Back to text)
6. Alharran AM, Obeidat A, Mhaidat N, El-Elimat T. Impact of magnesium supplementation on blood pressure: an umbrella meta-analysis of RCTs. Curr Ther Res Clin Exp. 2024;101:100755. [Internet]. [cited 2025 Aug 5]. Available from: https://doi.org/10.1016/j.curtheres.2024.100755
   (Back to text)
7. Harvard Health Publishing. Magnesium and blood pressure: what’s the evidence? [Internet]. Boston (MA): Harvard Medical School; 2022 Apr 1 [cited 2025 Aug 5]. Available from: https://www.health.harvard.edu/heart-health/magnesium-and-blood-pressure-whats-the-evidence
   (Back to text)
8. NHS. Vitamins and minerals: magnesium. [Internet]. London (UK): NHS; 2020 Aug 3 [updated 2020 Aug 3; cited 2025 Aug 5]. Available from: https://www.nhs.uk/conditions/vitamins-and-minerals/others/
   (Back to text)
9. NHS. Magnesium test. [Internet]. London (UK): NHS; 2022 May 20 [updated 2022 May 20; cited 2025 Aug 5]. Available from: https://www.nhs.uk/tests-and-treatments/magnesium-test/
   (Back to text)
10. Kass LS, Skinner P, Poeira F. A pilot study of the effect of magnesium supplementation on blood pressure in treated hypertensive individuals. [Internet]. 2013;[cited 2025 Aug 5]. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC3761770/
    (Back to text)
11. Volpe SL. Magnesium and the athlete. Curr Sports Med Rep. 2015;14(4):279–283. [Internet]. [cited 2025 Aug 5]. Available from: https://pubmed.ncbi.nlm.nih.gov/26166051/
    (Back to text)
12. Kotecha D. Magnesium for atrial fibrillation, myth or magic? Circ Arrhythm Electrophysiol. 2016;9(9):e004521. [Internet]. [cited 2025 Aug 5]. Available from: https://doi.org/10.1161/CIRCEP.116.004521
    (Back to text)
13. Tchouapi P, McDaniel K, Zibaei A, Allen JK. Intravenous magnesium as an adjunct to standard of care for treatment of atrial fibrillation with rapid ventricular response. TheNNT [Internet]. 2023 Apr 20 [cited 2025 Aug 5]. Available from: https://thennt.com/nnt/intravenous-magnesium-as-an-adjunct-to-standard-of-care-for-treatment-of-atrial-fibrillation-with-rapid-ventricular-response/
    (Back to text)
14. Lutsey PL, Chen LY, Eaton A, Jaeb M, Rudser KD, Neaton JD, et al. A pilot randomized trial of oral magnesium supplementation on supraventricular arrhythmias. Nutrients. 2018;10(7):884. [Internet]. [cited 2025 Aug 5]. Available from: https://doi.org/10.3390/nu10070884
    (Back to text)
15. FixAfib.com. Magnesium and heart palpitations. [Internet]. 2021 [cited 2025 Aug 5]. Available from: https://www.fixafib.com/blog/afib-treatment/magnesium-and-heart-palpitations/
    (Back to text)
16. Gloucestershire Hospitals NHS Foundation Trust. Guideline for the management of hypomagnesaemia in adults. [Internet]. Gloucester (UK): GHNHSFT; 2021 Feb [updated 2021 Oct; cited 2025 Aug 5]. Available from: https://www.gloshospitals.nhs.uk/media/documents/Hypomagnesaemia_jcPg0oV.pdf
    (Back to text)
17. GoodRx Health. 13 foods that are naturally high in magnesium. [Internet]. 2024 Aug 5 [updated 2024 Aug 5; cited 2025 Aug 5]. Available from: https://www.goodrx.com/well-being/diet-nutrition/foods-high-in-magnesium
    (Back to text)
18. Medical News Today. Signs and symptoms of low magnesium levels (magnesium deficiency). [Internet]. 2024 May 28 [updated 2024 May 28; cited 2025 Aug 5]. Available from: https://www.medicalnewstoday.com/articles/322191
    (Back to text)
19. Siddiqui RW, Nishat SMH, Alzaabi AA, Alzaabi FM, Al Tarawneh DJ, Al Tarawneh YJ, et al. The connection between magnesium and heart health: understanding its impact on cardiovascular wellness. Cureus. 2024;16(10):e72302. [Internet]. [cited 2025 Aug 5]. Available from: https://doi.org/10.7759/cureus.72302
    (Back to text)

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