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  2. Ageing - Wikipedia

    en.wikipedia.org/wiki/Ageing

    Ageing (or aging in American English) is the process of becoming older. The term refers mainly to humans , many other animals , and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal .

  3. Intrinsic and extrinsic ageing - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_and_extrinsic_ageing

    Such an ageing process may include qualitative and quantitative changes and includes diminished or defective synthesis of collagen and elastin in the dermis. [citation needed] Extrinsic ageing of skin is a distinctive declination process caused by external factors, which include ultra-violet radiation, cigarette smoking, air pollution, among ...

  4. Hallmarks of aging - Wikipedia

    en.wikipedia.org/wiki/Hallmarks_of_aging

    Aging is characterized by a progressive loss of physiological integrity, leading to impaired function and increased vulnerability to death. The hallmarks of aging are the types of biochemical changes that occur in all organisms that experience biological aging and lead to a progressive loss of physiological integrity, impaired function and, eventually, death.

  5. Senescence - Wikipedia

    en.wikipedia.org/wiki/Senescence

    Senescence (/ s ɪ ˈ n ɛ s ə n s /) or biological aging is the gradual deterioration of functional characteristics in living organisms. Whole organism senescence involves an increase in death rates or a decrease in fecundity with increasing age, at least in the later part of an organism's life cycle.

  6. Disposable soma theory of aging - Wikipedia

    en.wikipedia.org/.../Disposable_soma_theory_of_aging

    In biogerontology, the disposable soma theory of aging states that organisms age due to an evolutionary trade-off between growth, reproduction, and DNA repair maintenance. [1] Formulated by British biologist Thomas Kirkwood , the disposable soma theory explains that an organism only has a limited amount of resources that it can allocate to its ...

  7. Photoaging - Wikipedia

    en.wikipedia.org/wiki/Photoaging

    Aging is a complex, progressive process that leads to functional and aesthetic changes in the skin. This process can result from both intrinsic (i.e., genetically determined) as well as extrinsic processes (i.e., environmental factors).

  8. Evolution of ageing - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_ageing

    Cockayne syndrome is a homozygous or heterozygous mutation that results in short stature, abnormalities in head size, and slow growth and development. [62] Rothmund–Thomson syndrome is a rare autosomal recessive disorder that affects the skin. It is characterized by the sparse hair, juvenile cataracts, skeletal abnormalities, and stunted ...

  9. Timeline of aging research - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_aging_research

    Precious3GPT, an artificial intelligence model designed to assist in aging research and drug discovery, is launched. [275] A study by scientists at Stanford University found that rather than being a solely gradual and linear process, aging accelerates dramatically at two points in a human lifetime. The study, which tracked thousands of ...