Digit-Length Ratios (2D:4D) as a Phenotypic Indicator of In Utero Androgen Exposure Is Not Prognostic for Androgenic Alopecia: A Descriptive-Analytic Study of 1200 Iranian Men

    June 2016 in “ Dermatology Reports ”
    Amir Feily, Masoomeh Hosseinpoor, Ali Bakhti … Marigdalia K. Ramirez-Fort
    Studysummary This study concluded that the digit-length ratio (2D:4D) does not predict androgenic alopecia development, suggesting prenatal androgen exposure does not predispose men to this condition.
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    Research cited in this study 6

    1. An Epidemiological Study of Androgenic Alopecia in 3114 Korean Patients Clinical and Experimental Dermatology · 2013
    2. Androgen Actions on the Human Hair Follicle: Perspectives Experimental Dermatology · 2012
    3. Hormonal Profile of Men with Premature Balding Experimental and Clinical Endocrinology & Diabetes · 2004
    4. Family History and Risk of Hair Loss Dermatology · 2004
    5. Androgenetic Alopecia in Men Aged 40-69 Years: Prevalence and Risk Factors British Journal of Dermatology · 2003
    6. Molecular Mechanisms of Androgenetic Alopecia Experimental Gerontology · 2002