Nutritional support for hair health

Nutritional support for hair health" is not a specific molecule or receptor but a general concept referring to the role of diet and supplements in promoting hair growth, strength, and scalp health. Essential nutrients like protein (for keratin production), iron (for oxygen transport to follicles), vitamin D (for follicle cycling), biotin (for strand strengthening), zinc, omega-3 fatty acids, and vitamins C and E support high metabolic demands of hair follicles, counter oxidative stress, reduce inflammation, and regulate hair cycles including anagen growth phases.[1][2][3][4][5][6] Deficiencies in these nutrients, common in women and those on restrictive diets, contribute to hair loss conditions like alopecia areata or androgenetic alopecia by impairing cell division, stem cell function, and sebum production.[2][3][5] While supplements can address subclinical deficiencies and improve hair parameters in some cases, they are not targeted therapies and show variable efficacy without proven deficiencies; excess intake may even turn antioxidants pro-oxidant.[2][4][7] No specific drugs interact with this as a "target," but nutritional interventions complement treatments for non-androgenic hair loss by enhancing follicle recovery and immunity.[2][6] Overall, it underscores nutrition's supportive role in hair biology rather than a druggable entity.[1][3][8]