I vote for a fat tax based on BMI, or maybe caliper measurement. BMI is pretty much outdated and/or wrong like most other government science. Maybe it should be your mile time or pullups or something.

I mean we already have the sin taxes on alcohol, cigarettes and candy. Lets get rid of the candy tax and go straight for gluttony. This way if you can't afford to eat healthy food, at least there will be a monetary incentive to eat less garbage food, and maybe take a jog around the trailer park every now and then.

Your car insurance charges you more for being a bad driver, and the life insurance company already charges you more for being a fat ass and a smoker. Why hasn't the gov't got on board?