sperm

A 16-year study has concluded U.S. sperm quality is decreasing, and environmental factors are one unconfirmed possibility.

The study involved 1,506 couples struggling to conceive.

Infertility is one of the most common problems for young people, affecting between 10 to 15 percent of couples.

The European Court of Human Rights said Dominique Petithory Lanzmann does not have legal standing to bring her late son's sperm to a fertility clinic in Israel so it can be implanted in eggs to make her grandchildren.

The research could change our understanding of the female anatomy.

"I felt dirty, almost as if I'd been raped," one victim said of the actions of Ottawa doctor Bernard Norman Barwin.

Females use sperm to activate eggs, but then produce clones of themselves.

Monica and Yongmin Zhu from California raced against the clock to retrieve some of their son Peter's genetic material after he died.

Researchers studied men who had visited fertility clinics.

Peter and Cheryl Rousseau filed a lawsuit in Vermont's federal court accusing Dr. John Boyd Coates, III and the fertility clinic for duping them.

The gel is rubbed onto a man's back or shoulders and, in theory, should drop sperm count to prevent pregnancy.

The U.K. imports thousands of sperm samples from Europe each year, and a no-deal Brexit could see supplies could decrease quantities.

Researchers built on existing evidence suggesting heat can affect a man's sperm count.

The Italian system does not offer artificial insemination to lesbian parents and registering a child may require the mother to lie that she had sex with a man.

Sperm was among the hundreds of things SpaceX sent to the International Space Station.

Sean Hannity has floated his latest conspiracy theory about the former president.

An important breakthrough meets a critical requirement for creating lab-grown sperm.

Why are Americans having less kids?

Air pollution is so widespread it might be related to infertility for a "significant number of couples," according to the researchers.

Stress can be hereditary, but new research suggests it doesn't have to be.

The process can lead to the creation of whole new species.

Laboratory testing has confirmed the presence of lead, a toxic heavy metal, in two supplements sold by Infowars.

Low sperm count is also associated with health problems, including high risk of cancer and heart disease.

Mouse sperm was freeze-dried and sent to the International Space Station for 288 days before being used to produce healthy pups on Earth.

A study has found that men with poor semen quality often have lower testosterone levels, increasing their susceptibility to common diseases as they grow older.

The findings could potentially shed light on the behavior of other animals where female aggression is high.

The CDC has warned people to avoid using sperm from three Florida counties.

Due to an error, 26 women's eggs may have been fertilized by sperm from someone who isn't the "intended father."

More Israeli men are freezing their sperm before going off to war, and a growing number of parents are extracting semen from their loved ones after their deaths.

Ole Vidar Toftesund has a cunning plan.