Scientists have pinpointed a dramatic transformation in the brain's immune cells that begins around age 50, offering a new biological target in the fight against dementia and cognitive decline. A specially engineered chewing gum has shown stunning early results against HPV and cancer-linked bacteria, slashing oral HPV levels by up to 93 percent in a development that could reshape cancer prevention. Researchers uncovered a troubling twist in ovarian cancer treatment, finding that chemotherapy survivors release a common sugar that may help tumors spread — a discovery that could change how rebound cancers are treated. New simulations of near-light-speed atomic collisions have captured some of the most intense accelerations ever recorded on Earth, opening fresh windows into the physics of the early universe. Meanwhile, a 518-million-year-old fossil has revealed the earliest known ancestors of spider fangs, and a blood protein test is emerging as a potential early warning system for Alzheimer's risk years before symptoms appear.
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