stego, first of all, CONGRATULATIONS on getting the weight off and KEEPING it off!! Way to go! You are absolutely right; it takes a lot of hard work and is a lifelong commitment. But well worth it.
Secondly, yes, as a pediatrician, I can tell you that we KNOW, and have numbers and graphs documenting the epidemic of obesity now affecting our children. It is real, it is happening, and it WILL affect so many in the future, if not already. We are already seeing adult "diseases" like type 2 diabetes, metabolic syndrome, atherosclerosis, hypertension, and heart disease in increasingly younger children.
It is really frightening.