Don't forget about the prescription slew of stimulants that overwork your heart and adrenals to "suppress" your appetite so that you can starve weight off. Not surprisingly the name of this class of medications are "anorexiants".
Also don't forget about the other shams such as Alli which prevent your body from digesting fat.
So you have a choice, you can either overwork your heart,fatigue your adrenals, and starve your body of nutrients for one option, or you can royally chemically screw up your digestion and prevent yourself from absorbing one of the best things your body can ingest.
Take your pick......./smh