Ozempic and weight loss injections – wonder drugs or a failure of our generation?

What causes someone to be unhappy with their looks?
Are our bodies halachically our own, such that we can do what we want with it?
Can we take medications when we don’t understand how they work and when there are serious side effects?
Should weight-loss injections be used only after trying to diet and control eating?
Can we suppress our appetite if it will take away from Oneg Shabbos and Simchas Yom Tov?
If someone uses Ozempic to lose weight while dating, does it need to be disclosed?