I have diffuse hair loss and logitudinal ridges in my nails (along with other symptoms of anemia) due to low ferritin levels... I tried Rogaine and it didn't work for me. I can't go on Propecia because I'm a female. I've been losing my hair since I was 12 because my low ferritin, but I never did anything about it until this year at age 22. The reason I tried rogaine was because doctors told me it's genetic (even though everyone in my family has thick hair!) until one doctor did some blood…