Carb addiction aka food addiction is a real thing. Decades later and people will still tell the obese that “all you need is will power”.
Six kids in the family and everyone has a weight problem as adults. Three have worked to keep the BMI under control (mid 20’s), one is obese and the other two are morbidly obese.
It’s genetic and environmental but it is controllable. It takes a lot of work, like any addiction, to recover.