https://en.wikipedia.org/wiki/Ketogenic_diet
Then drugs came out and everyone ran for the quick fix.
There is no money in cures that target the root cause which is often basic nutrition and using the biology as it was designed, instead drugs can be invented, patented, and when everybody takes them there isn't a control group left to notice that in aggregate they make things worse. And the doctors are indoctrinated to know nothing about nutrition, to be fearful or dismissive of supplementation (see: vitamin D) and believe there is a pharma drug for every condition.
The good news is it's rather easily fixable, but it is something that will never come from top down, it is and is going to be a bottom-up process.
It's interesting to go through her earlier videos where she documents her daily life.
[1] https://www.cell.com/cell-reports-medicine/fulltext/S2666-37...
https://news.ycombinator.com/item?id=20421989 Chronic Schizophrenia Put into Remission with Ketogenic Diet (psychologytoday.com)
July 12, 2019 (14 comments)