DMT FOR ALZHEIMERS Disease?

So my uncle who is 53 and in amazing shape, plays tennis and runs marathons. The doctor has given him 3 years to live. Well 1 year of quality time and then..well you know how it goes..

Anyways, I was reading up on the use of N-N-DMT and it’s potential effects on Alzheimer’s. Wondering if anyone has any knowledge of this?