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  1. 28 Αυγ 2017 · Biological aging refers to the gradual degeneration of the body's cells, tissues and organ systems over time. It can be divided into primary, secondary and tertiary aging. Primary aging is inevitable and governed by genetic and biological factors. Secondary aging results from environmental influences like lifestyle.

  2. 11 Οκτ 2018 · The document discusses various concepts and theories of aging. It defines aging as the deterioration of physiological functions necessary for survival and fertility that occurs over time. It classifies aging as chronological, biological, psychological, social, and cognitive.

  3. 10 Απρ 2020 · This document discusses several theories of aging at the cellular, molecular, evolutionary, and systems levels. The main cellular theories discussed are telomere shortening and free radical damage accumulation over time.

  4. Maximum Life Span. Age of the longest-lived survivors of a cohort or population. For humans, operationally considered to be the oldest age reached by 1 in 100 million people. Considered to be inversely proportional to the rate of aging of a population.

  5. Introduction. What is aging? How long can people live? Is there a limit to how long people can live? What is life span? versus life expectancy? Do all living life forms age? Concepts & Theories. Definitions: life span---Longest time that species is capable of living (110 years for humans)

  6. 1 Σεπ 2014 · Biology of Human Aging. Introduction to human aging • Aging is a complicated process involving all of the many subtle changes that occur in our bodies with the passage of time. • These changes tend to decrease our ability to withstand stress, and death is the inevitable end result.

  7. 22 Ιουν 2020 · Human ageing is associated with high susceptibility to disease. Some aspects of ageing can be studied directly in humans and have revealed that ageing is influenced by many factors, including...

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