Few lifestyle factors influence sperm shape and size: study

June 27, 2014 7:20 PM

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NEW YORK (Reuters Health) - For couples struggling with infertility, there are few lifestyle changes men can make to improve the size and shape of their sperm, suggests a new study.

Sperm shape and size - known as morphology - were worse in semen samples collected during summer months and from men who smoked marijuana. Morphology was better among samples collected after a man abstained from sexual activity for a few days.

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