There won't be any scientific evidence because the drug companies with their multimillion dollar double blind studies have no money to be made.

There is no scientific evidence that people have bad hair days either, but alas, many of us do. I follow Wahl's about 90% and I personally function better and better even though I am over 70.

I have read her book and am trying to follow it, I feel a lot better eating healthy for sure. I figure it's not a bad thing to eat this way:)

I read her book --Preordered it from Amazon..was totally compliant with the no dairy no gluten no eggs and eating grass fed and wild meats-- even liver! none of it worked for me after 4 months..Ive maintained eating clean but have given up on it

Well have you read the book? It's compelling. I am doing it a little at a time. Starting with excluding gluten and dairy products. It's very difficult to eat her way. But I have definitely seen an improvement in my brain fog and concentration. My gait has improved also ....

I am trying my best to stay on the diet; but no matter what I do, a little gluten sneaks it way in. One thing for sure, I feel better already. I will continue to follow Wahls and work on improving and improving. There are lots of things on the program that I am not used to, but I am determined. So there you have it.