Daily Multivitamins Show Modest Slowdown in Biological Aging: A new study suggests that taking a daily multivitamin may modestly slow biological aging in older adults. Published in Nature Medicine, the research analyzed blood samples from 958 participants in the U.S. COSMOS trial, whose average age was 70. Using five epigenetic clocks based on DNA methylation patterns, researchers found that two years of multivitamin use slowed aging markers by about four months compared with placebo. The effect was strongest in people whose biological age already exceeded their chronological age. Scientists say the benefit is small, but the consistency across multiple aging clocks makes the finding notable. Researchers still do not know exactly why multivitamins may have this effect, and they caution that larger studies are needed to determine whether these epigenetic changes translate into meaningful health outcomes or longer, healthier lives. (Nature)

Epigenetic Age Acceleration Tracks with Future Cancer Risk in Older Adults: A newly published open-access study in npj Aging strengthens the case for epigenetic age as a practical risk marker. Researchers analyzed DNA methylation–based biological age in 1,916 adults in Germany’s ESTHER cohort, with repeat measurements eight years later for 894 people. Over more than 21 years of follow-up, 513 cancers were identified. Participants with prior cancer already showed higher baseline biological age, and accelerated biological aging was consistently associated with greater overall cancer risk. The paper is especially interesting because it does not just look at a single time point: steeper biological-aging trajectories over time were also linked to higher later cancer incidence. That makes this more than a “clock curiosity” story; it suggests serial methylation measures could eventually help with prevention, surveillance, or stratifying longer-term risk. (Nature)

New Single-Cell Tool Reads Transcriptome, Epigenome, and 3D Genome at Once: A team led by researchers at KAIST and Duke University reported a trimodal single-cell platform that simultaneously measures gene expression, chromatin state, and 3D genome architecture in the same cell. Reported in Nature Biotechnology and covered this week by Phys.org, the method, called scHiCAR, aims to solve a persistent limitation in cell biology: averaging signals across many cells can hide the earliest molecular changes that matter in development and disease. By combining transcriptome, epigenome, and genome folding information, the system produces a much more complete map of cell state. The researchers also incorporated AI-based analysis to improve accuracy and reproducibility. For biomedicine, the importance is obvious: technologies like this could sharpen efforts to identify rare cell states, trace disease progression, and understand why seemingly similar cells behave very differently. (Phys.org)

Alzheimer’s Brains Show Specific DNA Methylation Changes Tied Closely to Tau: Mayo Clinic researchers reported this week that they found distinct DNA-level regulatory changes in the brains of people with Alzheimer’s disease, drawing on tissue from 472 donors in the Mayo Clinic Brain Bank. Their analysis focused on DNA methylation across the genome and linked most significant methylation shifts to tau pathology rather than just general brain degeneration. The findings also highlight oligodendrocytes and myelin-related pathways, suggesting that changes in the cells that insulate neurons may be central to Alzheimer’s biology. That matters because it widens the conversation beyond neurons alone and points to potentially reversible epigenetic pathways as therapeutic targets. Just as important, the Mayo team released an interactive multiomic atlas so outside researchers can search the data by gene or chromosomal location, turning one study into a resource for the field. (Mayo Clinic News Network)

Microbial Exposure Leaves an Epigenetic “Memory” That Protects Lungs from Allergies: One of the more conceptually striking stories of the week comes from Institut Pasteur’s work on allergy prevention. In mice, exposure to fragments of viruses or bacteria induced a type 1 immune response that protected the lungs against later allergic reactions, not just briefly but for weeks to months. The surprise is where that memory was stored: not primarily in classic immune memory cells, but in lung fibroblasts. The researchers traced the effect to an epigenetic modification affecting the Ccl11 gene, which controls recruitment of eosinophils, major players in allergic inflammation. By effectively blocking that pathway, the lungs remained resistant to later hypersensitivity. The result reframes fibroblasts as active memory-bearing cells and suggests future prevention or therapy might target long-lived tissue programming, not only immune signaling. (Medical Xpress)

Breast Tumors May “Remember” Mechanical Stress Through Epigenetic Changes: Cancer cells are not shaped only by mutations and chemical signals; this week’s breast-cancer paper argues they can also be shaped by pressure. In a Science Advances study, researchers found that compressive stress activates the mechanosensor PIEZO1, which then triggers Rho-ROCK signaling and helps drive tumor progression. In mouse and other models, compression promoted tumor growth, while silencing Piezo1 blocked the effect. The deeper epigenetic point is that the mechanical stress did not act as a fleeting signal. It produced what the authors call epigenetic mechanical memory, including histone modifications associated with open chromatin and altered expression of cancer-related genes. The study also notes that elevated PIEZO1 is associated with 35% poorer survival in breast-cancer patients, making the pathway a plausible mechanotherapy target rather than just a basic-science curiosity. (PubMed)

Setd8 Emerges as a Key Keeper of Retinal Progenitor Identity: A new Stem Cell Reports study puts the histone methyltransferase Setd8 at the center of retinal development. Using RNA-seq and ATAC-seq, the researchers found that retinal progenitor cells preserve a distinctive chromatin accessibility program as they generate late-stage retinal cell types. Setd8 appears crucial to maintaining that state. When the enzyme was deleted in developing mouse retinal progenitor cells, proliferation fell, apoptosis rose, retinal layering was disrupted, and the cells partially shifted toward a transcriptomic profile associated with terminal differentiation. In other words, the progenitors began losing the flexible identity they need to keep producing diverse retinal cells. That makes this more than a narrow developmental genetics story: it speaks directly to how chromatin regulation preserves regenerative potential, which is central to future efforts in retinal repair and vision-restoration research. (PubMed)

Possible Record Falls for Atmospheric-Pressure Superconductivity: Moving beyond epigenetics, one of the week’s biggest broader science stories is a possible new benchmark in superconductivity. Researchers reported that a mercury- and copper-based compound, first squeezed to high pressure and then rapidly decompressed, remained superconducting up to 151 kelvins under atmospheric pressure. If the result holds, that would be the highest confirmed superconducting temperature yet achieved at ordinary pressure, beating the previous record by roughly 18 degrees. This does not mean room-temperature superconductors have arrived; the material still has to be extremely cold. But the pressure-release trick is important because many of the highest-temperature superconductors only work under crushing pressures that make them impractical. Even incremental progress at atmospheric pressure matters enormously for long-term applications in magnets, energy transmission, and advanced electronics. (Science News)

NASA Rules Out a 2032 Lunar Impact for Asteroid 2024 YR4: NASA used new James Webb Space Telescope observations from February 18 and 26 to tighten the orbit of near-Earth asteroid 2024 YR4 and eliminate the chance that it will strike the Moon on December 22, 2032. Updated calculations now place the asteroid’s closest lunar pass at about 13,200 miles, or 21,200 kilometers, from the surface. The story is noteworthy not because the asteroid changed course, but because the uncertainty around its future position shrank enough to remove the impact scenario. NASA emphasized that this reflects improved precision in orbital knowledge, not a change in the asteroid’s path. The episode is also a reminder of Webb’s unexpected value for planetary defense: it was able to capture some of the faintest asteroid observations ever made when other observatories could not. (NASA Science)

A ‘Chemical Goldilocks Zone’ May Narrow the Search for Life: A new exoplanet study adds a geochemical twist to the classic habitable-zone idea. Instead of asking only whether a planet sits at the right temperature for liquid water, the researchers modeled whether planets form with the right mantle chemistry to retain biologically important phosphorus and nitrogen. Their simulations suggest that fewer than 10 percent of modeled rocky planets had enough of both elements available in the mantle to plausibly support life. The controlling variable appears to be a narrow range of oxygen conditions during core formation, effectively a “chemical Goldilocks zone.” Earth seems to sit inside that sweet spot. The result does not tell us which planets are alive, but it does suggest future astrobiology may need to prioritize planets with the right internal chemistry, not just the right orbit. (Science News)