Low semen levels in mice make for fatter sons

By Ashley Yeager, 15:23 PM January 27, 2014

Mice without the glands that make seminal fluid may sire sons with more body fat.

When sperm from male mice with no seminal fluid fertilized an egg, there were fewer viable sites for the embryo to implant itself in a female mouse's uterus, the placenta was heavier and the pregnancy rate was lower compared with eggs fertilized by sperm from healthy male mice. The male offspring of fathers lacking semen also had 72 percent more fat tissue 14 weeks after birth than sons of healthy male mice, rese...

Source URL: https://www.sciencenews.org/blog/science-ticker/low-semen-levels-mice-make-fatter-sons