The objective of this study is to ascertain the effects of polyesther sling scrotal cover on sperm production in healthy volunteers used polyester sling scrotal cover all day and night for 24 weeks. Semen was analyzed at a 3-week interval, and clinical chemistry and hematology were monitored at a 12-week interval. The results showed that within 24 weeks sperm concentration, percentage of normal sperm morphology, and sperm velocity decreased to below normal range in all subjects. We concluded that polyester sling scrotal cover can suppress sperm production to aligospermia in Indonesia men. Not a single subject achieved azoospermia, as compared with in Egypt study that showed 100% azoospermia in 14 men. Keywords: Fertility, male contraception, spermatogenesis, electrostatic field, thermoregulation, polyester sling. Nukman Moeloek; Departmen of Biology, Faculty of Medicine University of Indonesia
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