Much of our current healthcare strategy is focused on dealing with the aftermath of poor health rather than on preventing the problems that lead to poor health and in maintaining good health.
Along these lines, Esther Dyson has talked about the need to focus more on "health" than on healthcare: http://healthblog.xprize.org/2009/05/health-innovators-esther-dyson-on.html
I have started a small project to help motivate people to take charge of their health and improve their own physical fitness and nutrition: Let's have a national Jack LaLanne Day. Details at http://JLLDay.org