John F. Kennedy said those words decades ago and this quote rings true for a current epidemic esp. in the USA. Obesity.
"Americans considered obese spend about $2,700 a year on healthcare, over someone classified as normal weight. If we eliminated these bills by losing 20 pounds, the country as a whole, would save about $190 Billion dollars in healthcare costs associated with obesity."
The link above reinforces what I have been proselytizing all along. Obesity is a burden, to yourself, to everyone around you, and to the country who's healthcare you depend on. Healthcare paid by other citizens taxes. Healthcare bills unfairly paid by healthy citizens. Citizens who sacrifice training at the gym, watching their diet, and prudent in their lifestyle.
The USD$190 BILLION PRICETAG should be incentive enough to force legislation of some sort to penalize the unhealthy (by their own actions) and provide incentives for the healthy, and other control legislation similar to the seatbelt law.
People are unwilling to enact change on their own. It often takes legislation to do it. Until there was a seatbelt law, no car company was installing seat belts voluntarily in their cars.