Primary+And+Secondary+Aging

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Definition:Primary aging- aged-related physical changes that have biological basis and are universally shared and inevitable page 372
Secondary Aging-age-related changes that are due to environmental influences, poor health habits, or disease page 372

Examples:
Primary aging-physical changes that take place over time such as the growth of gray hair, formation of wrinkles, changes in visual acuity Secondary aging-the product of environmental influences that lead to bad or good health habits, diseases, etc.( smoking, tanning leading to sun cancer eventually)

Analogies:
Plums wrinkle up as time passes just ask primary aging causes older people to wrinkle.

Mnemonics:
Physical changes=primary aging Or Surrounding environmental influences=secondary aging

In the News:
[|One versus the other] [|Two kinds of aging] [|Biology of aging] [|Caloric restriction and primary aging] [|Secondary aging article] media type="youtube" key="KJrM_8KUfcE" width="425" height="350"media type="youtube" key="gJAn5-aCxeA" width="425" height="350"