More than half of all Americans live with at least one chronic disease, taking an enormous toll on patients and driving up the cost of health care.

There are many causes, but patient behaviors can play a large role in many chronic diseases. The 3-4-50 Framework, developed by the UK-based Oxford Health Alliance, states that tobacco use, poor diet and a sedentary lifestyle contribute to cancer, cardiovascular disease, chronic lower-respiratory disease and diabetes. Those four conditions cause 50 percent of deaths, many of them premature