Human sperm have long been a subject of fascination—not just for their role in fertilization, but for their remarkable ability to navigate through some of the most viscous environments in the body.

A number of factors can play a decisive role in some couples' inability to conceive, which may lead them to turn to fertility treatments like IVF or IUI. But before couples get to that point, they ...

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

Researchers have uncovered a complex biological process that protects germ cells, the precursor cells to sperm, from genetic ...

An epigenetic study found that sperm DNA methylation changes with paternal age at thousands of genomic sites, including regions linked to autism. Age-related epigenetic shifts in sperm may help ...