Yeah, it can affect brain chemicals.
Have you read through the threads about carbs and sugar in the
Eating Disorder section? Or the binge threads? It's all related.
Most of the threads in that section will have pertinence. It's a long process to get past food-based issues. I've worked on it for nearly 15 years and I consider myself recovered, but it wasn't easy. Sugar will always be something I have to be careful and mindful with.