A new study in mice has shown that a previously developed male hormonal (testosterone) oral contraceptive method is unable to stop the production and / or the release of sperm.
Tag: sperm
Scientists: Soda May Lower Semen Quality
Researchers found that low sperm motility, or sperm movement, was associated with the high consumption of sugary drinks in healthy men who are lean. They did not find any relationship between sugary drink consumption and sperm motility in men who are obese.
Stress Degrades Sperm and Fertility, Study Finds
Psychological stress may degrade sperm quality and sperm fertility, according to a study published today in the journal Fertility and Sterility
Are Known Donors a Safe Choice?
by Naomi Cahn
Last week, the California Court of Appeal for Los Angeles County issued its opinion in Jason P v. Danielle S. In this highly publicized decision, the court allowed a known sperm donor to …
No Link Found Between Low Sperm Count, Birth Defects
Having a low sperm count doesn’t seem to determine whether a man’s children will be born with birth defects, a new study indicates.
World’s Oldest Sperm Discovered. And it’s gigantic.
There’s little about the discovery that isn’t gross. It looks like angel hair pasta. It’s undeniably enormous. And it’s cocooned in bat poop. It’s the world’s oldest sperm.
Skin Cells From Infertile Men Transformed Into Early-Stage Sperm
Skin tissue from infertile men has been converted into sperm cell precursors after their stem cells were transplanted into mice.
Sperm Meets Egg: Protein Essential for Fertilization Discovered
Researchers at the Wellcome Trust Sanger Institute have discovered interacting proteins on the surface of the sperm and the egg essential to begin mammalian life. These proteins, which allow the sperm and egg to recognize one another, offer new paths towards improved fertility treatments and the development of new contraceptives.
Weight Loss to Improve Fertility Outcomes: How Far Should We Go?
Obesity is now a pandemic and undoubtedly the greatest burden facing health services worldwide. Twenty percent of women of childbearing age are thought to be obese. It is well-established that, in women, obesity is associated with reduced rates of ovulation, increased miscarriage rates and poor response to ovarian stimulation during assisted conception. Male fertility also appears to be similarly adversely affected with evidence of a reduced ejaculate volume, reduced sperm count and increased sperm DNA damage in obese men.
Three (Parents) Can Be A Crowd, But For Some It’s A Family
Maisie and Ella have two moms and a dad. The father was a sperm donor for the female couple, and state law allowed him to be a third parent. As families change, laws in some places are changing, too.