Blocking Pleasure Causes Depression

There's a new type of pill out that blocks pleasure, literally. These pills block the pleasure pathways in the brain. The idea is, you get people to stop smoking by blocking the pleasure they get from smoking. Same thing with eating. If you over-eat because it's fun, then take the fun out of it.

The only problem is, these pills also drive people into a suicidal depression.

Does anyone else see approximately a thousand things wrong with all of this?