US EditionHow "old RNA" reshapes sperm metabolism
6 Articles
6 Articles
They Find a Molecular Clock in Sperm that Could Explain the Risks of Being a Parent at an Older Age.
Paternity retardation is a growing trend around the world. However, for years now, science has warned that the rise in parental age is associated with increased risks to the health of offspring, such as obesity and fetal death.So far, the big question was what biological mechanism was behind that risk.A new research from the University of Utah Health has just brought a key piece to the puzzle: sperm seems to carry with it a "molecular clock" tha…
Toxic masculinity is a buzzword, but what exactly does it consist of? A group of New Zealand researchers have now mapped eight characteristics of toxic masculinity in heterosexual men. They found that only a small number of men are hostilely toxic, and it is more common in situations of economic hardship or social exclusion.
DAILY DOSE: Study Takes a Shot at Quantifying Toxic Masculinity; Sperm Carries an RNA “Aging Clock,” With a Midlife Cliff.
Study Takes a Shot at Quantifying Toxic Masculinity: A major study drawing on nearly 50,000 participants from New Zealand challenges common assumptions about “toxic masculinity,” finding that only a small minority of men exhibit the most hostile and damaging traits. Researchers identified five groups, with just 3.2 percent classified as “hostile toxic,” while over a third were considered “atoxic.” Importantly, feeling strongly “manly” did not pr…
RNA "Aging Clock" Found in Human Sperm
For decades, scientists have warned that advancing paternal age can affect the health of future children. Older fathers face higher risks of passing on traits linked to obesity, stillbirth, and neurodevelopmental conditions. Until now, most explanations focused almost entirely on DNA damage. A new study suggests that another layer of biology, long overlooked, may be just as important. Researchers at the University of Utah Health have identified …
Scientists Discover a Hidden RNA “Aging Clock” in Human Sperm
The RNA contents of sperm go through similar shifts over time in both mice and humans, which may lead to a rapid, dramatic shift at mid-life. What's more, "old RNA" seems to change cells' metabolism--potentially contributing to the health risks of having kids later in life.
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