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.
Monica and Yongmin Zhu from California raced against the clock to retrieve some of their son Peter's genetic material after he died.
The U.K. imports thousands of sperm samples from Europe each year, and a no-deal Brexit could see supplies could decrease quantities.
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?
Stress can be hereditary, but new research suggests it doesn't have to be.
Low sperm count is also associated with health problems, including high risk of cancer and heart disease.
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.
Due to an error, 26 women's eggs may have been fertilized by sperm from someone who isn't the "intended father."
Ole Vidar Toftesund has a cunning plan.