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The Effect of Aging on Tissues01:19

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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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Aging01:26

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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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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
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Related Experiment Video

Updated: Mar 13, 2026

Immunolabeling and Counting Ribbon Synapses in Young Adult and Aged Gerbil Cochleae
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Inflammatory changes and age-related hearing loss.

Ruth Sander1

  • 1At the University of Portsmouth.

Nursing Older People
|January 27, 2012
PubMed
Summary

Lifestyle factors like smoking and high-fat diets contribute to hearing loss in older adults. These factors may harm the cochlea directly or indirectly through cardiovascular disease impacting blood supply.

Area of Science:

  • Otolaryngology
  • Cardiovascular Medicine
  • Gerontology

Background:

  • Lifestyle factors, including smoking and high-fat diets, are linked to age-related hearing loss.
  • Cardiovascular disease is a potential mediator, affecting cochlear blood supply.
  • Inflammatory processes associated with cardiovascular disease may directly impact the cochlea.

Purpose of the Study:

  • To explore the relationship between lifestyle factors, cardiovascular disease, and hearing loss in older adults.
  • To investigate the potential mechanisms linking these factors to cochlear health.

Main Methods:

  • Review of existing literature on lifestyle factors and hearing loss.
  • Analysis of studies investigating cardiovascular disease and cochlear function.

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  • Examination of research on inflammation and its effects on the auditory system.

    • Main Results:

    • Strong association found between smoking, high-fat diets, and increased risk of hearing loss in the elderly.
    • Evidence suggests cardiovascular disease compromises cochlear blood flow, contributing to hearing impairment.
    • Inflammatory pathways implicated in cardiovascular disease show potential direct damage to cochlear structures.

    Conclusions:

    • Lifestyle modifications, such as smoking cessation and dietary changes, may be crucial for preventing age-related hearing loss.
    • Managing cardiovascular health is vital for preserving cochlear function and hearing.
    • Further research into the inflammatory mechanisms could reveal novel therapeutic targets for hearing preservation.