Organs age at different speeds: a blood test might soon tell which ones
Peer-Reviewed Publication
Updates every hour. Last Updated: 24-Oct-2026 09:17 ET (24-Oct-2026 13:17 GMT/UTC)
AI-based “tissue clocks” can estimate the biological age of human organs from histological images, researchers at the CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences and the Ludwig Boltzmann Institute for Network Medicine (LBI-NetMed) at the University of Vienna showed. By analyzing more than 25,000 tissue samples across 40 tissue types, their study reveals that organs age at different rates throughout life and that these changes can even be detected from blood samples. The findings, published in Nature Medicine (DOI: 10.1038/s41591-026-04566-5), provide a new framework for understanding aging and may open new avenues for disease monitoring and early diagnosis.
Scientists from the Pontificia Universidad Católica del Ecuador officially described Pristimantis milpe, an abundant and widely distributed species that had been confused with another species for over a century. To solve the mystery, researchers reviewed specimens collected in Ecuador during the 19th century and preserved at the Natural History Museum in London.
What do “epigenetic clocks” actually measure? These lab tests have become popular tools for studying biological aging, or how the body’s cellular function changes at a faster or slower rate than expected. However, the underlying biology behind each of these measurements has remained largely unknown until now.
A recent USC Leonard Davis School of Gerontology-led study published in npj Aging shows the variability in what five of the most widely used epigenetic clocks are actually measuring. The research team also developed new gene-expression based clocks to complement existing epigenetic clocks, which show even stronger predictive power for age-related disease and mortality.
Salk scientists use DNA origami technique to build dye-cycling ORBIT, a method for tracking protein-DNA interactions for hours at single base-pair resolution. Using dye-cycling ORBIT, the team measured the rotation of RNA polymerase during DNA transcription. The method will allow scientists to study molecular movements that were previously impossible to see or study, adding a new dimension to life science research.
Some of Earth’s oldest living organisms may be right beneath our feet: not ancient trees or coral reefs but fungi. Yet despite their ubiquity and importance, scientists still don’t know how long most fungi can live—or even how to define their age.
In an opinion paper publishing in the Cell Press journal Trends in Microbiology on August 13, researchers examine why fungal longevity remains so difficult to study. To investigate the long-overlooked biological mystery, the team recommends leveraging new technologies such as “fungi-on-a-chip” and conducting long-term lab experiments with genetic tracking.
Duraplasty is a surgical procedure that is used to repair or reconstruct the dura mater using a patch graft. Several graft materials are used for the surgery, but their comparative safety remains uncertain. Now, researchers conducted a prospective randomized study in Central India to compare the outcomes of autologous pericranium (natural graft) with those of synthetic high-density polypropylene (G-Patch) in patients undergoing cranial duraplasty. Findings confirmed that both materials demonstrated acceptable short-term safety profiles.