When I see a chubby child, I usually see chubby parents right along with them.
While you do see some kids chubby, with overweight parents, I think many, if not MOST overweight kids today are from THIN parents. In my neighborhood, so many are overweight, and their parents are NOT...at all!
It does come down to the processed crap that is out there today, the busy lifestyle and way too much McDonalds. I think thin parents feel too secure that they aren't fat, so the crap they are giving their kids isn't going to make them fat either and then later they are finding out how wrong they were.
I am overweight, have been since middle school. My mother did NOTHING with us when we were younger, no sports, no activities at all!
My main goal with my kids is to keep them thin and healthy. I dont' want them going through what I have!!!!
I have taught them very healthy eating habits (people comment all the time on the fact that they LOVE fresh fish, salad, raw veggies, fresh fruit...cause most kids won't eat that...even in restaurants, that is what they order. We are not PBJ people, they have NEVER had a Pop Tart, a Lunchable, Bologna, white bread, etc), and keeping them very active...not only by having them do sports and such, but by teaching them to LOVE them and want to do them!
Having done childcare full time for the last 22 years now, I see it as an issue of convenience. I see parents so worried that their kids aren't eating enough, that they are willing to allow SO much junkfood to be eaten...so long as they are eating, they think they are doing the right thing.
The one I have now, her diet is 100% garbage!!! She will eat NOTHING else. Nothing healthy goes into her body at all. I won't go into the whole story about this, pretty long, but when this child is older and fat, people will wonder why. HELLO!!! This is it! I see this is the case almost all the time. Kids can NOT eat 100% sugar laden foods, everything out of a box or a drive thru and NOT end up overweight!!!