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Answer 3
  1. Varicocele.Varicoceles are the most common correctable cause of male infertility. The prevalence is 20% to 40% in infertile males. Repair results in improved seminal parameters in 70% of patients. Endocrine disorders account for fewer than 3% of cases of male infertility. Approximately 3% of cases of male infertility are attributable to cryptorchidism.1 Ejaculatory duct obstruction is found in 7% to 12% of infertile males. Cigarette smoking has not been found to be associated with infertility in most studies.

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