2. You’re Not Getting Enough Iron
For vegetarians, or people trying to limit their meat intake, becoming iron deficient is a real concern, and a diet lacking in iron may lead to hair loss. Women between the ages of 19 and 50 should get 18 mg of iron per day, and women 51 and older should get 8 mg per day. But don’t run to the drugstore for supplements so quickly: Cochran does not recommend taking an iron supplement without having a proven iron deficiency and consulting with a doctor. Instead, add iron-rich foods to your diet.