That commercial from the Corn Refiners Association reminds me of this conversation from the movie Kingpin.

[On smoking]
Ishmael: You should try to quit. They say its bad for your heart, your lungs. It quickens the aging process.
Roy: Who’s done more research than the good people at the American Tobacco Industry? They say its harmless. Why would they lie? If you’re dead, you can’t smoke.