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Related Experiment Videos

Body weight and amenorrhea

A C Wentz

    Obstetrics and Gynecology
    |October 1, 1980
    PubMed
    Summary

    Significant body fat loss is linked to menstrual dysfunction. Women using oral contraceptives may develop secondary amenorrhea even with minor weight or body fat reduction.

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    Area of Science:

    • Reproductive endocrinology
    • Human physiology

    Background:

    • Menstrual dysfunction, including amenorrhea, affects women's reproductive health.
    • Oral contraceptive use is common, and its impact on menstrual cycles requires understanding.
    • Body fat percentage and weight changes can influence hormonal balance and menstruation.

    Purpose of the Study:

    • To investigate the relationship between body weight, body fat loss, and menstrual dysfunction in women with primary and secondary amenorrhea.
    • To assess the risk of secondary amenorrhea in women using oral contraceptives who experience weight or body fat loss.

    Main Methods:

    • Comparison of 24 women with primary and secondary amenorrhea.
    • Assessment of body weight, weight loss, estimated body fat content, and body fat loss.
    • Evaluation of menstrual history, particularly failure to menstruate after discontinuing oral contraceptives.

    Main Results:

    • A significant association was found between menstrual dysfunction and a loss of over 30% of body fat.
    • Women using oral contraceptives who experienced even minor degrees of weight or body fat loss were identified as being at risk for secondary amenorrhea.

    Conclusions:

    • Substantial body fat loss is a key factor in menstrual dysfunction.
    • Women on oral contraceptives are particularly vulnerable to developing secondary amenorrhea following even minimal weight or body fat reduction.

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