Targeted mRNA delivery restores sperm production and fertility in infertile mice

Researchers have found that targeted delivery of messenger RNA (mRNA) can restore sperm production and fertility in genetically infertile male mice. The findings, published today in Stem Cell Reports, demonstrate that transient mRNA treatment restored sperm production and enabled the birth of healthy offspring. Up to 10% of couples worldwide are affected by infertility, according … Read more

How “old RNA” reshapes sperm metabolism

Increasing paternal age has been linked to elevated health risks for the next generation, including higher risks of obesity and stillbirth. But what drives this increased risk remains unknown. Most research into this link focuses on how the DNA inside sperm changes with age. But sperm carry other molecules as well, including a diverse array … Read more

Age-related sperm changes at imprint regions linked to autism risk

A new research paper was published in Volume 17, Issue 12 of Aging-US on December 29, 2025, titled “Age-specific DNA methylation alterations in sperm at imprint control regions may contribute to the risk of autism spectrum disorder in offspring.” The study – selected as our Editors’ Choice for January, 2026 – was led by first authors Eugenia Casella and Jana … Read more

Cutting back on sugary drinks may protect men’s fertility, review finds

Emerging evidence links regular sugary drink intake to impaired sperm quality and DNA damage. Find out why experts recommend reducing SSBs for reproductive health. Recommendations for reducing the impact of SSBs on sperm health. Research shows that regular consumption of sugar-sweetened beverages (SSB) is associated with adverse effects on male reproductive health, primarily through hormonal … Read more

Low phosphate levels may help explain male infertility, study finds

Could a simple mineral hold the key to solving unexplained male infertility? New findings suggest that phosphate, vital for energy and testicular function, may play a surprising role in sperm health, offering a new angle for treatment. Image Credit: Babul Hosen / Shutterstock Men with fertility issues have lower levels of phosphate in the blood than average, … Read more

Air pollution before conception may increase child BMI

In a study of more than 5,000 mothers and their children, exposure to air pollution during the three months before pregnancy predicted higher child body mass index (BMI) and related obesity risk factors up to two years of age. Findings from the study, which was supported by the National Institute of Environmental Health Sciences, were … Read more

Childhood stress impacts epigenetic profile of sperm and brain development

Childhood stress can impact the epigenetic profile of sperm. These results may also have practical implications for future generations through epigenetic inheritance, as many of the observed epigenetic associations are related to brain development. This ground-breaking discovery has been made in the FinnBrain study at the University of Turku, Finland, in collaboration with researchers from … Read more