You forgot to say "Please."

http://www.nejm.org/doi/full/10.1056/NEJMp0708558#t=article

"Sweeping statements about the cost-saving potential of prevention, however, are overreaching. Studies have concluded that preventing illness can in some cases save money but in other cases can add to health care costs." - The New England Journal of Medicine

What it does do is open up the opportunity for people in the business of health care to make money on healthy people, a much bigger market.