Free Owl, et. al, you appear to be correct. I googled the issue and it appears that sugar cravings come from low serotonin levels. Further that sugar “lights up” the same pleasure pathways as alcohol.
Here’s an interesting blog post on the issue:
http://www.hipsobriety.com/home/2016/1/2/sugar-addiction-and-booze-why-it-happens-how-to-fix-it