Sociology / Unit 7 Soc 1123 short lesson, about 20 seconds
Primary and Secondary Aging
Captions available
The idea
Primary aging is biological change from molecular and cellular processes; secondary aging is change caused by controllable factors such as diet and exercise.
In practice
Thinning skin and graying hair are primary; a decline driven mainly by inactivity is secondary and can be slowed.
Where people slip
The two interact, and observed decline in a given person is rarely purely one or the other.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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