Answer:
The pill that triggers the lateral hypothalamus (LH) and ventromedial hypothalamus (VMH) would be popular because it would make dealing with weight problems and eating disorders much easier. For example, people who suffer from obesity would take this pill in order to feel satiated from a small amount of food and thus lose weight.
Over time, this pill might lead to abuse, similarly to the way self-induced vomiting is used by people who suffer from bulimia nervosa. For example, People might decide to consciously eat too much food during festive seasons, such as Christmas holidays, and then later just take a pill to lose the weight they gained. Naturally, this can lead to negative long-term health effects, because people would consume a large amount of sugar and fat during festivities, and then miss out on important nutrients later, because they would it less.