Hey, I’m 16, been losing a lot of hair for past 1.5 years, receeding hairline, thin hairs. So last week i gave a blood test and my doctor gave my dad a call and told me that its because of vitamin deficiency, Vit D to be exact. Told me to eat eggs, yogurt, milk, walk in sun, and vitamin D supplements and etc. i’ve been taking a lot of Vitamin D from like yesterday. How long till i see a change in my hairloss?