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Related Experiment Videos

Oral contraceptives and endocrine changes.

O J Lucis, R Lucis

    Bulletin of the World Health Organization
    |January 1, 1972
    PubMed
    Summary

    Oral contraceptives significantly alter women's hormone levels, affecting cortisol and thyroid hormones. Urinary catecholamines showed the least change, indicating specific endocrine impacts.

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    Area of Science:

    • Endocrinology
    • Reproductive Health
    • Clinical Chemistry

    Background:

    • Oral contraceptives (OCs) are widely used for birth control.
    • Hormonal fluctuations can impact various physiological markers.
    • Understanding OC effects on the endocrine system is crucial for women's health.

    Purpose of the Study:

    • To investigate the impact of oral contraceptives on key serum and urinary hormone levels.
    • To compare endocrine profiles of women using OCs with control groups.
    • To identify specific hormones most affected by OC use.

    Main Methods:

    • Serum levels of cortisol, protein-bound iodine, and total thyroxine were measured.
    • T(3) binding index was assessed.
    • Urinary excretion of cortisol, corticosteroids, ketosteroids, and estrogens was quantified.
    • Catecholamine and mandelic acid excretion was also assayed.

    Main Results:

    • Oral contraceptives markedly influenced the overall endocrine environment.
    • Serum cortisol and thyroid hormone levels showed significant alterations.
    • Urinary excretion of total catecholamines and 4-hydroxy-3-methoxymandelic acid exhibited minimal deviations.
    • Morning and afternoon serum cortisol levels tended to increase during OC use.

    Conclusions:

    • Oral contraceptives exert a significant influence on the endocrine system.
    • Specific hormone levels, including cortisol and thyroid hormones, are demonstrably affected.
    • Further research may elucidate long-term implications and personalized hormonal responses to OCs.

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