You don't need pills to diet. You just need to watch your calorie intake.
With exceptions, you know a people get this way because they can't stop shoving junk food in their face. I work retail. I see what people buy. People need to take care of their own body and they need to address the issue before it gets completely out of hand. Diet, exercise. A bit of effort can prevent you from being on of these people who can't move under their own weight. People need to be responsible for their own body and make better decisions.