[flextheruler]

Unfortunately for a lot of people with weight issues it stems from becoming overweight during puberty which is uniquely bad. Your body's appetite signals are permanently impaired if you become overweight during puberty because during this window your fat cells don't just increase in size, but also in number and this increased quantity does not go away once created. Fat cell shrink as weight is loss, but they are not destroyed and they are responsible for appetite signaling. It's one of the reasons that childhood obesity is actually leagues worse than it first appears and I think should be considered child abuse in extreme circumstances.

[apt-apt-apt-apt]

What you said isn't unique to puberty, it's the same with being overweight in adulthood (AIUI).