Nutrition and genetics impact hair health and loss

Hair health is closely linked to nutrition and hormonal factors. While many people turn to expensive supplements, evaluating dietary intake is a critical first step in maintaining hair health.

Genetic factors, specifically androgenetic alopecia, are a primary cause of hair loss. This condition is driven by sensitivity to dihydrotestosterone (DHT), a derivative of testosterone. In individuals with a genetic predisposition, DHT causes hair follicles in specific areas—such as the temples and crown in men, or the part line in women—to shrink and shorten their growth cycle until the follicle eventually ceases to produce hair.

Beyond genetics, nutritional deficiencies can significantly impact hair. Common culprits include a lack of zinc, protein, vitamin D, B vitamins, and iron (often linked to anemia). Additionally, unbalanced diets, certain medications such as antihypertensives or antidepressants, and cancer therapies can contribute to hair fragility or loss.