The study "Vitamins as Key Modulators in Hair Growth Dynamics", published on January 30, 2024, in the journal Biomed Journal of Scientific & Technical Research, sheds new light on the critical role of vitamins in hair growth processes. The authors of this publication are Salvador Pérez-Mora, Sandra Viridiana Salgado-Hernández, Yunuén Daniela Solorio-Cendejas, Alejandro Pérez-Gómez, Rodrigo Pérez-Gómez, Consuelo Gómez-García, and David Guillermo Pérez-Ishiwara. The article analyzes the impact of vitamins on the hair growth cycle, considering their potential in treating and preventing hair loss-related issues.
The Hair Growth Cycle
The hair growth cycle consists of four phases: anagen (active growth), catagen (regression phase), telogen (resting phase), and exogen (natural shedding). Maintaining a proper balance between these phases is essential for healthy hair. The authors highlight that vitamin deficiencies, especially in vitamins A, B7, C, D, and E, can disrupt this cycle, leading to hair fragility, weakened hair structure, and, in extreme cases, significant hair loss.
The Role of Vitamin A and Biotin
Vitamin A regulates sebum production, protecting the scalp and hair from damage caused by free radicals. Studies show that it activates WNT/β-catenin signaling pathways, supporting the hair growth phase. On the other hand, biotin (vitamin B7) is crucial for keratin synthesis, the primary building block of hair, skin, and nails. Biotin deficiencies can weaken hair structure and increase hair fragility.
Vitamin C – The Power of Antioxidation
Vitamin C impacts collagen synthesis, making hair stronger and more resistant to damage. As a powerful antioxidant, it neutralizes free radicals, protecting hair cells. Studies have shown that it stimulates the proliferation of dermal papilla cells, accelerating the transition of hair to the active growth phase.
The Importance of Vitamins D and E
Vitamin D, while more commonly associated with bone health, plays a significant role in hair health. Its receptors are located in hair follicles, and vitamin D deficiency shortens the anagen phase and increases the risk of hair loss. Vitamin E, with its antioxidant properties, improves scalp blood flow, nourishing hair follicles.
Scientific Evidence and Challenges
Numerous studies confirm the effectiveness of vitamins in modulating hair growth. Research on mice has shown that vitamin E supplementation increases the number of hair follicles in the anagen phase, while vitamin C stimulates the release of IGF-1, a hormone responsible for hair growth. Vitamin A supports hair follicle regeneration and improves hair density.
The authors emphasize the need for further clinical studies to better understand the mechanisms of vitamin action and identify potential side effects of supplementation.
