Surprise! 'Bad' Sperm Get Damaged in Trip to Ejaculation

Startling study finds that the DNA in sperm from the testicles of infertile men is better quality than sperm from their ejaculate

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Male infertility is a growing problem in the west, and the reasons suggested are many and myriad, from smoking to cellphones to skinny jeans. Sex hadn’t been on the list but, in a sense, maybe it should be....