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Related Concept Videos

Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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Stereotypes, Prejudice, and Discrimination02:55

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Humans are very diverse and although we share many similarities, we also have many differences. The social groups we belong to help form our identities (Tajfel, 1974). These differences may be difficult for some people to reconcile, which may lead to prejudice toward people who are different. Prejudice is a negative attitude and feeling toward an individual based solely on one’s membership in a particular social group (Allport, 1954; Brown, 2010). Prejudice is common against people who...
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Erikson's Theory on Socioemotional Development during Adulthood01:27

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Erik Erikson's theory of psychosocial development outlines a series of stages through which individuals progress across the lifespan. Each stage involves a psychosocial conflict that significantly influences personal growth and well-being. Three key stages — intimacy versus isolation, generativity versus stagnation, and integrity versus despair — highlight the developmental challenges faced in adulthood.
Intimacy Versus Isolation in Early Adulthood
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Cognitive Development During Adulthood01:30

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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Updated: May 23, 2025

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Social disadvantage accelerates aging.

Mika Kivimäki1,2, Jaana Pentti3,4, Philipp Frank5,3

  • 1Brain Sciences, University College London, London, UK. m.kivimaki@ucl.ac.uk.

Nature Medicine
|March 15, 2025
PubMed
Summary
This summary is machine-generated.

Social disadvantage accelerates biological aging, increasing the risk of numerous age-related diseases. This occurs through specific age-related proteins and inflammatory pathways, highlighting a biological link between social factors and health outcomes.

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Area of Science:

  • Gerontology
  • Social Epidemiology
  • Proteomics

Background:

  • Social disadvantage is a known health risk factor, but its impact on the aging process is not well understood.
  • Investigating the link between social disadvantage and biological aging is crucial for understanding health disparities.

Purpose of the Study:

  • To examine the association between social disadvantage and age-related plasma proteins.
  • To determine if social disadvantage is linked to an increased risk of age-related diseases.

Main Methods:

  • A multicohort approach was used to analyze plasma proteomic data.
  • Associations between social disadvantage, specific proteins, and disease risk were investigated.

Main Results:

  • Proteomic signatures indicated accelerated immune aging in individuals with social disadvantage.
  • Fourteen specific age-related proteins were identified and linked to social disadvantage across the lifespan.
  • Social disadvantage was associated with an increased risk of 66 age-related diseases, partly mediated by these proteins.
  • Upregulation of the NF-κB24 pathway and interleukin-8 was a key finding.

Conclusions:

  • Social disadvantage throughout life may accelerate biological aging.
  • This accelerated aging process, involving specific proteins and inflammatory pathways, can increase the risk of age-related diseases.
  • Findings support a biological mechanism linking social stratification to health outcomes.