It is not because you are lazy or lack willpower to resist sugary, processed foods. There are specific biological mechanisms that drive addictive behaviour. These behaviours arise from primitive neurochemical rewards centers in the brain that override normal willpower, and, in the case of food addictions, overwhelm the ordinary biological signals that control hunger.
While some of us may be more genetically predisposed to the addictive properties of food, if you examine your own behaviour, and your relationship to sugar in particular, you will likely find that your behaviour around sugar matches up perfectly with why you canâ€™t control your eating habits.
If food does in fact have the potential to be legitimately addictive, that doesnâ€™t mean that everyone is addicted to it. Everybody overeats once in a while and abuses food once in a while, but it doesnâ€™t mean you are a food addict. The important thing to remember is that some brains are more vulnerable to food and other addictions.