alt Hacker NewsMy parents were vegetarians in the 80s, also no weight issues. I don't believe it's carbs or seed oils or any of the modern scapegoats. Since they were eating plenty of that. They even had cake.
I think it doesn't matter what you eat as long as it isn't super processed. The one thing that's changed a lot in the 90s is more and more convenience food.
"processed" is also a modern scapegoat, unfortunately.
But all three are correct, I think: Food has gotten more laden with sugar, seed oils, and carbs because it's processed to be that way after we tried to go Low Fat for so long.
A conscientious vegetarian is probably eating damn near an ideal diet by avoiding all that.