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Hormonal changes and sexual function in aging men.

J M Davidson, J J Chen, L Crapo

    The Journal of Clinical Endocrinology and Metabolism
    |July 1, 1983
    PubMed
    Summary
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    Male hormone levels, particularly testosterone, decline with age, correlating with reduced sexual function and activity. These hormonal changes are linked to aging but don't fully explain all age-related sexual changes in men.

    Area of Science:

    • Endocrinology
    • Human Sexuality
    • Aging Research

    Background:

    • Age-related hormonal shifts in men are not fully understood.
    • Previous research suggests a decline in testosterone with aging.
    • The relationship between these hormonal changes and sexual function requires further investigation.

    Purpose of the Study:

    • To investigate the relationship between age-related changes in pituitary and gonadal hormone levels and sexual function in men.
    • To determine if hormonal changes correlate with decreased sexual activity, libido, and potency.
    • To explore the influence of diseases and medications on these hormone-behavior relationships.

    Main Methods:

    • Cross-sectional study of 220 men aged 41-93 years.
    • Assessed circulating levels of pituitary and gonadal hormones.

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  • Quantitatively evaluated sexual function, including sexual activity, libido, and potency.

    • Main Results:

    • Confirmed age-related decline in total and free testosterone (T) and increase in gonadotropins (LH).
    • Observed parallel decline in sexual function measures (activity, libido, potency).
    • Free T decline was more pronounced than total T; LH increases correlated with sexual hypofunction.

    Conclusions:

    • Declining androgen levels and reduced sexual activity are associated with male aging.
    • Hormonal factors contribute to, but do not entirely explain, age-related sexual changes in men.
    • Further research should consider hormonal factors in the context of other aging-related changes.