I think a healthy low carb diet and a work-out plan would work better for you. Not being a dick, I'm serious, working out and a healthy diet would benefit us more than concerns for public healthcare.
About two months ago i fell down a flight of stairs and had to go to the emergency room. How would a low carb diet have prevented that?
A few years ago i crashed on my bike, hit my head pretty bad. Got picked up by an ambulance. Again, how would a healthy diet have prevented that?
You cant prevent alot of diseases and damages to your body by eating healthy. A friend of my parents died from cancer a few weeks ago, and was in pretty good shape. Never drank alcohol, never smoked, did alot of working out and ate healthy. He is still dead though.