Last week, i found an alopecia areata patch at the back of my head. I tried to check the vitamins level in the body and found the following - Vitamin D2 - 2ng/ml Vitamin D3 - 6.07ng/ml I was wondering if lower d levels is acting here as a trigger for alopecia?? Other vitamins levels are as follows: Vitamin B12-:252 pg/ml Vitamin B1 -: 1.2 ng/ml Vitamin B2 -: 11.52 ng/ml Vitamin B3 -: 2.93 ng/ml Vitamin B5 -: 98.05ng/ml Vitamin B6- : 15.54 ng/ml Vitamin B7 -: 1.07 ng/ml Vitamin B9 -: 0.98 ng/ml Vitamin K -: 0.24 ng/ml Vitamin E -: 13759 ng/ml Vitamin A -: 416.75 ng/ml