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Changes in skinfold thickness with increasing age

D A Hall, A D Blackett, A R Zajac

    Age and Ageing
    |February 1, 1981
    PubMed
    Summary
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    Skin thickness decreases in three phases with age, with significant loss after 60 years. Females generally have thinner skin than males throughout adulthood, potentially linked to collagen changes.

    Area of Science:

    • Dermatology
    • Gerontology
    • Human Physiology

    Background:

    • Skin thickness is a key indicator of physiological aging.
    • Understanding age-related changes in skin is crucial for various medical and cosmetic applications.
    • Previous research indicates skin properties change with age, but a detailed, multi-phase analysis is lacking.

    Purpose of the Study:

    • To investigate the relationship between skinfold thickness and age across a wide demographic range.
    • To identify distinct phases of skin thickness change throughout the human lifespan.
    • To compare sex-based differences in age-related skin thickness alterations.

    Main Methods:

    • Skinfold thickness was measured in 626 healthy individuals (infants to elderly).
    • Subjects spanned ages from 5 months to 73 years.

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  • Data analysis focused on identifying age- and sex-specific trends in skin thickness.

    • Main Results:

    • A tri-phasic pattern of skin thickness change with age was observed.
    • Infant skin thickness was high and decreased rapidly, stabilizing between 20-60 years.
    • A significant decline in skin thickness occurred after 60 years, with females consistently showing lower values than males during adulthood.

    Conclusions:

    • The three identified phases may correlate with dehydration, impaired collagen synthesis, and collagen degradation.
    • Age-related skin thinning is a complex process with distinct stages.
    • Sex influences skin thickness throughout adult life, suggesting hormonal or metabolic differences.