The same pleasure and reward centres in the brain that are triggered by addictive drugs like cocaine are also activated by highly palatable foods that are rich in sugar, fat and salt. Once you have experienced the pleasure (the high) from eating these foods you quickly want more to achieve another high. The pleasure and reward signals from your brain will override the feelings of being full and satisfied so you are eating when you are not hungry.
Compulsive overeating (or volume eating)
Compulsive overeating is a type of behavioural addiction meaning that someone can become preoccupied with a behaviour (such as eating, or gambling, or shopping) that triggers intense pleasure. People with food addictions lose control over their eating behaviour and find themselves spending excessive amounts of time involved with food and overeating, or anticipating the emotional effects of compulsive overeating.
Take the food addiction questionnaire and read the further advice here
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