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The amino acid, sold as a focus-and-alertness supplement, was linked to reduced life expectancy in men in a large genetic analysis — but researchers stress it doesn’t show supplements shorten life.
Scientists mapped how dormant tumor cells shelter inside protective niches of immune and support cells — a hideout that may explain why cancer comes back years later.
Venetoclax, already used for blood cancers, pushed latently infected cells to die and cut the intact viral reservoir in SIV-infected macaques, with effects lasting months.
Tracking healthy adults with MRI for nearly two decades, researchers found structural brain changes at least seven years before amyloid plaques became visible on scans.
Most infants carry C. difficile without obvious symptoms, but new research finds it can remodel the developing gut and immune system — with effects that may last into adulthood.
In mice, harmful T cells attacking the brain in tau-driven neurodegeneration were activated in lymph nodes — and blocking that step preserved memory, all without a drug crossing into the brain.
The GLP-1 drug behind Ozempic and Wegovy lengthened lifespan and improved muscle, memory and inflammation in old mice — and the benefits weren’t explained by calorie cutting alone.
A decade-long study found that obesity imprints durable molecular marks on immune cells that can persist for years after people slim down, which may help explain lingering health risks.
MIT researchers built a detailed atlas of the striatum — the brain’s hub for movement, habit and reward — pinpointing neuron types uniquely vulnerable in Huntington’s and addiction.
A randomized study testing a longer antiviral course — on the theory that lingering virus drives long Covid — found no clinical benefit, closing off one hoped-for treatment path.