Vitamin D Deficiency Caused Female Hair Loss for 10 Years

(female) I have experienced significant hair loss over the past 10 years. I have recently been diagnosed with Vitamin D deficiency. My dr advised me to take two vitamin D pills twice/week for the first month, and then one/week thereafter.

I have read on this site that regrowth is possible. Is regrowth possible after such a long time, or does the scalp become damaged. At what point is it ‘too late’ to regrow hair?

I do not know the answer other than to offer you hope that when the vitamin deficiency is solved, the hair will regrow. I don’t recall any firsthand experience with a female patient that had a full decade of hair loss due to a vitamin deficiency to base a conclusion on.