What do you mean?
A high carbohydrate diet was never scientifically proven or tested. One guy (Ancel Keys) had a theory, cherry picked some countries that showed a very small correlation. But political things were afoot in America and Nixon went with his plan and enacted the US diet regulations in 1977 that promoted grains which helped US farmers especially the corn industry. The other countries soon adopted it since US leads the way.
But if you look at the graph of when diseases like obesity, mental illness, depression, heart disease really explodes from 1980s, right when the dietary guidelines are taken up.
Of course correlation doesn't equal causation (which is one of the flaws in the Ancel study). But it's definitely something we should do studies on.
That's not to say the rate of mental illness is going up or down or staying the same. But measuring the per capita diagnosis rate won't tell you anything about that.
Same here in all respects.
> But measuring the per capita diagnosis rate won't tell you anything about that.
I believe that some of the increase in diagnosis rates is because of increasing diagnosis in historically under-diagnosed groups, especially in the US where access to healthcare hasn't been available to everyone.
https://www.additudemag.com/race-and-adhd-how-people-of-colo...
You can control for rising diagnosis all day, but find me anorexic people 100 years ago. They basically didn’t exist.
2.) Afaik, anorexiction rates are going down. It is less of problem then it used to be in previous generation.