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Video: Sperm are ‘spinners not swimmers’—because they are lopsided

Research by fertility scientists in the UK and Mexico challenges the accepted view of how sperm “swim”, suggesting that it ...
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Marijuana? Masturbation? Alcohol? What behaviors affect male fertility?

[W]e can look at overall trends in the scientific literature and draw some conclusions about what facets of your life ...
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Sperm test could predict odds of fathering child with autism

Some men who have an autistic child carry mutations linked to the condition only in their sperm, according to a ...
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Another benefit of regular exercise— ‘agile, fast-moving sperm’

Regular physical activity can keep a man’s sperm in tip-top shape, a new study suggests. The research was published [December 20] in ...
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Podcast: Sneaky sheep, substandard stallions and sperm wars

Stories of sneaky sheep, substandard racing stallions, and news from the front lines of the sperm wars ...
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How fathers’ diets, lifestyle choices could impact their babies’ health

[E]merging science indicates that fathers play a more significant role in pregnancy outcomes than previously thought. … Traditionally, the father’s ...
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In the age of DNA, sperm donors can no longer expect promises of anonymity to stand up

For generations, it was a basic tenet of donating sperm: Clinics could forever protect their clients’ identities. But, increasingly, donor ...
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Making eggs and sperm from stem cells would create ‘ethical, social and legal conundrums’

Until recently, the only way to make eggs or sperm was the old-fashioned way: in the ovaries and testes. In ...
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Sperm counts are falling. Here are 5 ways to boost male fertility

The concentration of sperm in semen, also known as sperm count, has halved in the West since the 1970s. The ...
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Should you freeze your sperm? The biological clock is ticking for men, too

Women face the brunt of societal pressure to have children before a certain age, but a new study concludes that ...
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‘An insurance policy for the future’: Why some healthy young men are freezing their sperm

Gilbert Sanchez froze his sperm in January [2019], shortly before his 25th birthday. He was healthy and at low-risk for ...
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Birth of lambs from 50-year-old frozen sperm ‘bodes well’ for human fertility

Semen frozen back in 1968 has been used to impregnate dozens of Merino ewes, resulting in healthy lambs. The Australian ...
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Is it OK to take sperm from the dead?

[A] New York judge earlier this month ordered a medical center to save the sperm of Peter Zhu, a 21-year-old cadet ...
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Unhealthy sperm often overlooked as cause of lost pregnancies

Doctors often recommend women who experience recurrent pregnancy loss, usually defined as three or more losses, undergo testing to try ...
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Targeting sperm in the quest for a contraceptive that doesn’t use hormones

Scientists are trying to create a new kind of contraception with a novel tactic: tangling up sperm so they can’t ...
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How a father’s stresses alter sperm and can ‘leave his children scarred’

A stressed-out and traumatized father can leave scars in his children. New research suggests this happens because sperm “learn” paternal ...
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Sperm carries more than just a father’s genetics

Eat poorly, and your body will remember—and possibly pass the consequences onto your kids. In the past several years, mounting ...
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‘Evolution is aimless’: How else do we explain external testicles?

Evolution is a work in progress, so it’s hardly surprising that some of the features it has built into the ...
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Fertility quest: How technology has fueled quantum leaps

Nanotech, artificial intelligence, wearables and biological engineering are among the new high tech ways to knock you up, stop your ...