THEORIES & MECHANISMS OF AGING

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10 Terms

1
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What is aging?

a progressive loss of function, and an organism’s increased vulnerability to disease and the environment

2
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What causes aging?

Genetic programming + accumulated cell damage from environment and lifestyle

3
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Lifespan

years lived

4
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Health Span

years lived in good health

5
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What are the 3 main categories of aging theories?

Biological, psychosocial, evolutionary.

6
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What does the disposable soma theory state?

The body is “disposable” after reproduction; damage builds up over time.

7
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What is the activity theory?

Staying active and social increases satisfaction in older age.

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What is the disengagement theory?

Gradual withdrawal from roles is normal and can benefit adaptation.

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What is the continuity theory?

People maintain the same habits, roles, and values, just adapted to aging.

10
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Men vs women in aging?

Women live longer; men often have fewer chronic conditions early but higher mortality.