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Age and female sex have repeatedly been identified as gallstone determinants but the underlying mechanisms are not clarified. The objectives of this study were to determine if changes with age in physiology, lifestyle, or reproductive hormones were associated with incident gallstones. A cohort study of a general population random sample (N = 2366) aged 30–60 years was performed. Participants were...
The aim of this study was to investigate sexual function and fertility in adult men born with hypospadias. Patients born with hypospadias, age‐matched controls, and a group of circumcised men completed a questionnaire constructed to reflect their psychosexual situation and fertility. Core gender identity, sexual orientation, and gender role behavior was also assessed. 167 patients [63% distal, 24%...
The associations between serum levels of reproductive hormones (follicle‐stimulating hormone, luteinizing hormone, testosterone, sex hormone‐binding globulin, inhibin B and calculated free testosterone) and urinary metabolite concentration of pyrethroid insecticides [3‐phenoxybenzoic acid (3‐PBA)] were explored in 322 male university students in suburban Tokyo. The subjects constituted part of a large...
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