Have you read Awakenings?
Awakenings: Oliver W. Sacks: 9780330523677: Amazon.com: Books
For me that's one of the most remarkable books of the 20th century.
What that says to me is that there are no magic bullets. The new wonder-drug had effects to be sure, and pretty remarkable ones; but it didn't solve the problem of the sleeping sickness permanently. I strongly suspect that's generalizable. I think pharmaceuticals are the god that failed -- yeah, some are useful at some times for some purposes, but you can't put it any higher than that, and the people who're selling them are banking on the rest of us not realizing that.
I think paleo diets are probably a little over-sold, but I also doubt they've ever done anyone any harm, and I think a diet of that general sort -- probably doesn't have to be exactly that -- can fix a lot of things. If you can get someone to follow that without distressing them, then well and good.
Again, I'd like to point to Awakenings: the patients that did best with the medications and other care that Sacks and the nuns could provide were those who also had good social support (awful abstract way to put it). That seems to be incalculable but massive. If your mother's got you to care about her, that's as important as anything.