PT - JOURNAL ARTICLE AU - Armand Zini AU - Jamie Libman TI - Sperm DNA damage: clinical significance in the era of assisted reproduction AID - 10.1503/cmaj.060218 DP - 2006 Aug 29 TA - Canadian Medical Association Journal PG - 495--500 VI - 175 IP - 5 4099 - http://www.cmaj.ca/content/175/5/495.short 4100 - http://www.cmaj.ca/content/175/5/495.full SO - CMAJ2006 Aug 29; 175 AB - Evidence suggests that damage to human sperm DNA might adversely affect reproductive outcomes and that the spermatozoa of infertile men possess substantially more sperm DNA damage than do the spermatozoa of fertile men. This is particularly relevant in an era where advanced forms of assisted reproductive technologies are commonly used (technologies that often bypass the barriers to natural selection), because there is some uncertainty regarding the safety of using DNA-damaged spermatozoa. In this review, we outline our current understanding of how sperm DNA is organized, what causes sperm DNA damage, what impact this damage may have on reproductive capacity and whether tests of sperm DNA damage are clinically useful.