I’m not sure we can actively blame the schools, although they certainly aren’t helping. Kids learn to like what they are given to eat as young children. If you feed them healthy food, that is what they will gravitate to later. It’s not that they won’t eat junk, but they are unlikely to crave it as much as a child who receives it regularly at home.
I’m one of those annoying people who can eat anything and doesn’t gain weight, but there are many many health problems in my family. So I have always tried to eat healthy in hopes of balancing out the health risks. I fed my two boys the same things I ate and to this day (they are 33 and 30), they still eat pretty healthy, even after all the temptations they’ve been exposed to outside the home.
And it wouldn’t surprise me to hear that what the mother consumes during a pregnancy also conditions a child’s likes and dislikes. They are, after all, sharing whatever the mother eats.
The other, crucial, thing is limit gaming system and television time for kids. Make them move around and do things! Even if it’s because they are bored and can’t think of anything else to do when tv is taken away, they will still get up and play. Even better if they can do active things with the parents. We went on family hikes after church on Sunday mornings, weather permitting. We took bicycle rides together, or just long walks. My husband and I were naturally active people, both former athletes, so this was something we did naturally. Turns out it was a really good idea for the boys, too. We allowed the kids gaming time (Nintendo was new back then), but it was limited to an hour a day. And the tv was never on all day long as a babysitter in our home. We sat down to watch something specific, then turned it off.
I truly believe that the earlier you instill good eating and exercise habits, the easier it will be to solve the bulk of the obesity problem.
One last comment and then I’ll get off my soapbox.
Please, please, please don’t contribute to fat shaming. Particularly for children. They have not chosen their eating plan at a young age, their parents have. Shame the parents if you must, but leave the children alone.