Note I said "one of many" mechanisms. For most people, what you said is true. As they gain weight their baseline appetite does decrease. The issue is that hu

Note I said "one of many" mechanisms. For most people, what you said is true. As they gain weight their baseline appetite does decrease. The issue is that humans have lots of mechanisms to encourage eating more (for example: eating is generally pleasant--most people like a nice dessert even if they are full) and not a lot of mechanisms to encourage eating less.