Modifiable lifestyles and health-related behaviors are leading causes of morbidity and mortality worldwide.
1-3 Smoking, poor diet, physical inactivity, and alcohol consumption have been identified as particularly important risk factors, accounting for over a third of all deaths in the United States in 2000.
2 Risk can be reduced by adopting healthier lifestyles,
4-11 but many people find it difficult to make lasting changes.
12-14