Addictive drugs like heroin and cocaine produce a high because they either masquerade as neurotransmitters or prompt the nervous system to release a flood of them. These kinds of changes in your brain chemistry lead to dependence, withdrawal, and addiction.
If you eat sugar on a regular basis, you will notice the increased in your appetite. As it turns out, sugar also messes with your neurotransmitters. It triggers a release of beta-endorphins, the natural opioids that are widely recognized for reducing pain after you’re injured and boosting happiness after you exercise. Sugar also triggers a release of dopamine, which is a neurotransmitter linked to cravings. It blocks the effect of the brain’s satiety center. Satiety makes us feel full, this blockage will leave us craving more sugary foods and every kind of food.