Logic dictates that preventing these diseases is a better approach than treating people after they have become ill. In many cases, the knowledge and tools needed for prevention appear to be in place. A number of these killer diseases share risk factors that can be modified by lifestyle changes—for example, by eliminating tobacco use, eating less processed food, and increasing physical activity. For certain cancers, screening tests are available that allow detection of the disease at an early stage. So why is prevention of these diseases so difficult when it seems like such a good idea on paper?
It Takes More Than an Apple a Day
Caroline Ash, Paula Kiberstis, Eliot Marshall, John Travis
Science 21 September 2012:
Vol. 337 no. 6101 pp. 1466-1467