Biological Theories of Aging

Flashcards covering key vocabulary and concepts related to the biological theories of aging discussed in the lecture.

Programmed Theories of Aging

Aging is genetically determined, with an internal clock that programs longevity.

Replicative senescence

The concept that cells have a limited number of divisions, possibly due to telomere shortening.

Neuroendocrine theory

Proposes that programmed functional changes in neurons and associated hormones cause aging.

Immunological theory

Suggests that functional decline of the immune system contributes to aging.

Stochastic Theories of Aging

Propose that aging results from small random changes that accumulate over time.

Free Radical Theory

Suggests that free radicals cause oxidative damage to cellular components, contributing to aging.

Energy Restriction theory

Posits that limited calorie intake can affect lifespan and aging.

Cross-linking theory

Describes how glucose binding to proteins leads to impaired biological function, associated with aging.

Chronic Inflammation

A prolonged inflammatory response that may contribute to age-related diseases.

Physical Activity Benefits

Physical activity can prevent neurotoxicity and modulate inflammatory responses, potentially reducing the impacts of aging.