Add Yahoo as a preferred source to see more of our stories on Google. Fathers may carry traces of their childhood trauma in their sperm cells, a new study finds. The new research, published Jan. 3 in ...

Researchers at Newcastle University in England report they have coaxed the first human sperm cells from embryonic stem cells, in a remarkable demonstration of how quickly the field of stem-cell ...

According to research from a team at the University of Utah Health and the University of Nevada, Reno School of Medicine, ...

Increasing paternal age has been linked to elevated health risks for the next generation, including higher risks of obesity ...

CHICAGO (Reuters) - U.S. researchers have found a way to coax human embryonic stem cells to turn into the types of cells that make eggs and sperm, shedding light on a stage of early human development ...

New research shows how sperm RNA changes as men age, revealing a biological shift that may affect reproduction and child ...

For decades, sperm were thought to become fully active the moment they entered the female reproductive tract. New research suggests otherwise. A temperature-sensitive switch inside sperm cells may ...

Almost every type of human cell is powered by mitochondria, bean-shaped organelles that use oxygen to synthesize usable energy.* These structures evolved billions of years ago from free-swimming ...

The so-called ticking biological clock has been framed largely as a concern for women. We talk about egg freezing, ovarian ...