Hair Biology and Nutritional Influences

The 2011 document examines the complex relationship between hair biology and nutrition, highlighting that hair health is a reflection of overall well-being and is affected by a variety of factors including nutritional, psychological, and pathological stress. It underscores the importance of a balanced diet and adequate nutrient supply for maintaining healthy hair, pointing out specific nutrients such as vitamin B, folate, and iron as crucial for optimal hair growth. The review also discusses the damaging effects of UV radiation on hair proteins, the impact of pharmaceutical drugs and herbal extracts on hair loss, and the role of diseases like psoriasis and alopecia areata on hair follicle biology. It emphasizes the significance of fatty acids, trace elements like zinc, and vitamins such as vitamin D and biotin in hair health, noting that deficiencies can lead to hair abnormalities and alopecia. The document concludes that while dietary influences on hair are recognized, excessive intake of supplements may be counterproductive and a comprehensive approach to hair loss treatment should include consideration of nutritional status.