Scientists at Rockefeller University profiled nearly 7 million cells from 21 organs in mice at three ages. The atlas reveals cell-type shifts, coordinated changes across organs, strong sex differences and genomic sites linked to immunity.
Photo by The New York Public Library, Unsplash
Researchers at the University of Utah tracked web activity of more than 1,000 US adults for four weeks. They found low-credibility health sites were rare overall but visits were concentrated among older adults, especially those who lean right politically.
Researchers found that long-term exposure to low levels of a common agricultural insecticide caused faster physiological aging and shorter lifespans in wild and laboratory fish. The study links telomere shortening and lipofuscin buildup to chlorpyrifos exposure.
Bone expert Bess Dawson-Hughes says older adults should check their calcium and vitamin D to protect bones and reduce falls and fractures. Practical advice includes eating dairy, sensible supplements, and getting sunlight when possible.