> "It often happens in the afternoon when your brain, which runs on sugar, starts to get hungry."

This moment isn't the problem per se. The brain's need for fuel is a legitimate biological process. The real problem is the generally poor attention to diet outside of the window. Juice for breakfast. Soda with lunch, dinner and late night. Cookies for snacks. Let's not forget sugar being added to (processed) food even when it's not necessary. Etc. These have all been normalized. Cookies for breakfast? Sure. No problem.

So what came first, the sugar addiction or the classic (shite) First World (mostly processed food) diet? I'd argue it's the latter. We've over-reinforced neuro paths to an unhealthy level. And we've made that a social norm as well. The brain isn't designed for such a relentless assault.