From Thinning to Thriving: Vitamins for Healthy Hair

Story at-a-glance Vitamin deficiencies often cause hair loss, with nutrients like vitamins D, B12, A and iron playing key roles in maintaining healthy hair growth cycles Vitamin D supports hair follicle development, while B vitamins help produce keratin — the protein that forms hair structure Iron carries oxygen to hair follicles; deficiency causes poor growth, but too much is also harmful, with ideal serum ferritin levels being 20 to 40 ng/mL Vitamin A regulates scalp health through sebum production; both deficiency and excess cause hair problems like dryness or thinning A nutrient-rich whole foods diet is the best approach to addressing vitamin-related hair loss, with supplement used only when necessary after proper testing

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