1. Major risk factors (also called primary risk factors) are directly related to the development of CHD and stroke. Contributory risk factors (or secondary risk factors) are those that increase the risk of CHD, but their direct contribution to the disease process has not been precisely determined.
2. Primary (Major) Risk Factors: a) Cannot be controlled --> Heredity, gender, and increasing age; b) Can be controlled --> Tobacco use, high blood pressure, high cholesterol, sedentary lifestyle, overweight and obesity, and diabetes.
3. Secondary (Contributory) Risk Factors: a) Can be controlled --> Stress, diet and nutrition, and alcohol consumption.