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

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

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

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 ...

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

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 ...

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 ...