Actually it's an article so I was able to read it. Another two cents:

I buy what they say. This is some of the reason I've been on a restricted diet for many years now. My brain is probably loaded with BDNF.

But not only is what they're proposing a long-term kind of thing, it really is for healthy brains. If I manage to recover I may go back to my one meal per day . . but I would need to see a hell of a lot better brain performance first . . and I would not be surprised if it triggered a relapse, based on what I read here. I can hardly imagine nutrient and calorie denial to an organ trying to rebuild itself.