Abstract
Varicocele is one of the most common, yet treatable, causes of male infertility. Varicoceles are present in more than 40% of infertile men with primary infertility, a figure that increases with age. Varicoceles impair semen parameters and sperm DNA and are linked with lower pregnancy and live birth rates. Until recently, men had seldom been examined in male fertility workups. This is changing as urologists have become recognized as team members in infertility. Hence identification and treatment are available as never before. Furthermore, as men become aware that they are as likely as their female partners to be infertile, they want equal ‘couple care’, requesting urological referrals as they realize that they can improve their semen quality and chances of fatherhood without or before fertility treatment. There is now a greater understanding of the mechanisms of varicocele-induced damage by oxidative stress, using sperm DNA as a sensitive biomarker of sperm quality. There is a current consensus that varicocele is linked to poor semen and repair improves semen and sperm DNA quality. Evidence is strengthening to indicate that varicocele repair increases pregnancy and live birth rates in natural conception and following fertility treatment.
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