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Articles related to focusing on healthy aging, prevention, mobility, cognition, nutrition, independence, and caregiving support.

5 min

Which theory of aging proposes that the body breaks down part by part after years of use Quizlet?

German biologist August Weismann introduced the wear-and-tear theory of aging in 1882. It is this theory of aging that proposes that the body breaks down part by part after years of use, suggesting that the body, much like a machine, slowly deteriorates over time due to continuous use and exposure to environmental stressors. While seemingly intuitive, this theory has faced significant scientific scrutiny and is now viewed as one piece of a much more complex puzzle regarding the aging process.

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2 min

What is the immunological theory of aging?

In 1969, biologist Roy Walford first presented the immunological theory of aging, proposing that the gradual decline of the immune system over time is a primary driver of the aging process. This concept links age-related changes in immunity, known as immunosenescence, to an increased risk of infections, autoimmune disorders, and inflammation.

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3 min

Which of the following is an example of the wear and tear theory of aging?

According to the American Psychological Association, the wear and tear theory suggests that aging is a result of the accumulation of damage to cells, tissues, and organs over time. A clear example that illustrates this concept is the development of osteoarthritis from repeated stress on joints.

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