How do I stop my hair from falling out?

First name the type. Diffuse shedding all over usually follows a trigger by two to three months, illness, childbirth, crash diets, major stress, or reflects iron or thyroid deficits; it regrows once the cause is fixed. Pattern thinning at the temples or crown is genetic and hormone-driven.

Blood tests for ferritin and thyroid catch the fixable causes. For pattern loss, minoxidil has real evidence and works best started early; prescription options add more.

Avoid the expensive dead ends: biotin without deficiency, most hair gummies and clinic packages sold without a diagnosis. Diagnosis first, then treatment, is the entire game.