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

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

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 ...

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 ...

Infections with high-risk strains of HPV appear to be associated with “significantly higher levels” of dead sperm cells than infections with low-risk strains, according to a small study published ...