sperm

Men who do more physically demanding jobs involving heavy lifting are more likely to have higher sperm counts and testosterone levels, according to a new study published in the journal Human Reproduction. Researchers ...

Sperm counts are declining worldwide at an accelerating rate, according to a recently published meta-analysis. An international team of ...

An experimental male birth control drug has been shown to temporarily paralyze sperm in mice and effectively prevent ...

Two Japanese men were recently arrested in Osaka prefecture on suspicion of trying to smuggle fertilized eggs and ...

A study based on a small sample seems to indicate that child abuse can change the DNA of ...