Sugar-rich diets generate excessive reward signals in your brain that can override normal self-control mechanisms and lead to addiction and overeating.
Research found a single week of bingeing on fast foods impaired appetite control, making the volunteers more likely to desire more junk food, even if they’d just eaten.

To learn more about overeating and junk food click on the link below
https://articles.mercola.com/…/19/junk-food-addiction.aspx