Human Growth and Development / Unit 13 HGD 1801 short lesson, about 20 seconds
Primary and Secondary Aging
Captions available
The idea
Primary aging is inevitable, genetically influenced biological change; secondary aging is change caused by behaviour and environment, and middle-adulthood change varies widely.
In practice
Greying hair from hair follicles producing less pigment, primary aging, beside wrinkles from years of sun, secondary aging.
Where people slip
Many adults eat more healthily with age, and prioritizing emotional goals fosters positive views of aging.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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