Dwayne,age 62,has developed heart disease from a lifetime of smoking cigarettes.His heart disease is an example of:

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Secondary aging refers to changes in the body that occur as a result of illness, disease, or environmental factors. Dwayne's heart disease is a result of his smoking, which is an environmental factor. Therefore, his heart disease is an example of secondary aging. Primary aging refers to the natural physical changes that occur as we age. Normal senescence refers to the decline in biological functioning that occurs as we age. Compressed morbidity refers to a shorter period of illness and disability at the end of life.

Dwayne,age 62,has Developed Heart Disease from a Lifetime of Smoking