I started my 22 year old son on high doses of D3 about four months ago. 10k iu 2x per day. Magnesium. Took away his aluminum-based anti-perspirant and floride toothpaste. Went natural products. He talks more and more every day. He still can't cross a street by himself, but he's doing his exercise with no supervision(yes, I peek). He's started reading for enjoyment. He answered a statement today with "why?' First time ever. I'm stoked.