Education may involve "finding a strategy that works for you". There are so, so many different ways to combat disordered eating. These are learnable things. My thought around "better education" is that the cycle of disordered eating can be stopped at some point before parents pass it on to their kids, at least (as I just posted in adjacent comment https://news.ycombinator.com/item?id=41811916 ). I absolutely recognize how insanely difficult it is to come back from disordered eating and stay at a lower weight after finally reaching it.

Though, now that you ask, I do think that many people don't actually know why they are overweight. They say it's because "McDonald's is cheaper than buying good food", not realizing the McDonalds won't satiate them and they will eat/spend more because their body is starved for proper nutrition. Watch the series "Supersize vs. Superskinny" and observe how nearly every participant is utterly clueless as to the underlying causes of their challenges on either size of the disordered-eating scale.