How dad’s stress changes his sperm

RNA-packed vesicles that glom on to the germ cells can be altered by a stress hormone, a mouse study suggests

sperm

NOT BUNDLES OF JOY  Stress may change the genetic contents of sperm by tweaking small packets of RNA in seminal fluid, a study in mice suggests.

Dennis Kunkel Microscopy/Science Source

Sperm from stressed-out dads can carry that stress from one generation to another.