Sixteen male genital exhibitionists were compared to nonviolent nonsex offender controls with respect to 9 serum hormones: cortisol, prolactin, dehydroepiandrosterone, estradiol, luteinizing hormone, follicle stimulating hormone, androstenedione, testosterone, sex hormone binding globulin, and two indices of free testosterone. There were group differences in estradiol, total testosterone and percent free testosterone. Exhibitionists had lower estradiol and testosterone but higher overall free testosterone. The results were unrelated to substance abuse, age, or education. Sex hormone abnormalities in exhibitionists and in other sex offender groups are discussed.
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