Interesting. Marijuana research has lead scientists to create a drug that does the exact opposite of marijuna as a diet drug.

Called rimonabant, the drug in one study helped people who were overweight drop an average of 20 pounds and in another doubled the chances that smokers would quit.

[…]

The drugs inhibit the activity of a receptor called CB1 that is part of what’s known as the endocannabinoid system, the circuitry that marijuana stimulates to give users the munchies.

Link (via Everything isn’t Under Control).