[menzoic]

Studies on rats have shown significant similarities between sugar consumption and drug-like effects, including bingeing, craving, tolerance, withdrawal, dependence, and reward. Some researchers argue that sugar alters mood and induces pleasure in a way that mimics drug effects such as cocaine. In certain experiments, rats even preferred sugar over cocaine, reinforcing the idea that sugar can strongly activate the brain’s reward system

[djtango]

This is somewhat intuitive when you think that sugar is almost pure energy and in a food-scarce existence that we evolved for, energy is synonymous with survival. So alongside reproducing, consuming energy is probably one of the most basic of desires we are hardwired to seek out in more ways than one