Diet alone will not reverse genetic hair loss. But nutritional deficiencies are among the most overlooked accelerators of shedding — and among the most correctable. Here is what to eat, what to avoid, and which supplements have real evidence behind them.
Many people start finasteride or minoxidil when their hair loss is actually driven by ferritin deficiency, thyroid dysfunction, or vitamin D insufficiency — all fully reversible without prescription medication. Get these tests first.
From FDA-approved first-line treatments to evidence-backed adjuncts — every intervention that has shown efficacy in controlled human studies, ranked by effectiveness and accessibility.