Vitamin D
★★★★★
I had serious hair loss for several years. I lost hair everywhere. My beautiful Native hair became very thin with some bald spots. Turned out my vitamin d levels were down to 13. Now after a prescription of 50,000 units of d2 weekly for 10 weeks, then 6000 units a day of d3 for a year. I have hair again. I was prescribed 4000 units a day for the rest of my life by our doctor.