The study, published in the journal Human Reproduction, has not yet been peer reviewed. It sampled 25 women and 18 men, with microplastics found in 69% of follicular fluid and 55% of seminal fluid.

Microplastics have been discovered in human follicular fluid and semen, according to new research, raising concerns about possible risks to reproductive health.

Sixty percent of miscarriages are caused by the failure of an embryo—the developmental stage before a fetus—to implant in the woman’s uterus. Part of the problem is that researchers have no idea how ...

Scientists say they are closer than ever to growing human eggs from body tissue. At George Church’s lab at the Wyss Institute of Harvard, researchers say this process could open up reproductive ...

Analyzing embryo movements in uteruslike environments could offer clues to improving the success rate of in vitro ...

NPR science correspondent Rob Stein has been following the controversial world of gene-editing and human reproduction, including some companies' recent quests to push gene-editing technology forward.

There's a fresh push to edit the genes of human embryos to prevent diseases and enhance characteristics that parents value. Bioethicists say just because it's possible doesn't mean it should be done.

That’s the promise of a radical approach to reproduction. Scientists have already created artificial eggs and sperm from mouse cells and used them to create mouse pups. Artificial human sex ...

In the last 50 years, average human sperm concentrations dropped by 51.6 percent, and total sperm counts dropped by 62.3 percent, according to a study published last week in the journal Human ...

Upon its debut, non-reproductive biomedical applications of synthetic embryos were widely touted. For example, synthetic human embryos can serve as experimental models for studying human birth defects ...