I didn't read the thread but it's obviously diet and not burning enough calories is the correct answer. This schit ain't hard.

There were fat kids when I was young, but not very many. Genetics definitely plays a role but it's more about lifestyle than any other thing... although I'm not sure if I could possibly have ever gotten fat. I dunno, fugk it.

Kids are slugs these days, all I did in my youth is burn calories.