he said he had Restless Leg syndrome and cured his by using higher amounts of Vit D. Well CURED is a big word. doubt that..and i say that BECAUSE..I have SEVERE RLS and nothing on this planet has helped much. I have tried everything and as i get older, it has gotten much worse. CBD was knocking the edge off at night but not quite doing it. sooo I tried the Vit D and I'll be damned..it worked. I am very sensitive to things soo i experimented with dosing. I am taking 3000IU every day or every other day and it really does work for RLS. I can sleep now..but if i dont take it...its full blown again. So it isnt a cure..but it is a treatment. He recommended taking 5000-10,000IU but i cant see myself taking that much and functioning. Vit D seems to make me tired. i would rather sleep and be tired thought than deal with the RLS. for cancer he recommends 50,000 IU. pretty high but its ok. he has a video also on how to tell if you are taking too much. lots of videos on Vit D from Dr B.