🧠 Blood Test Predicts Alzheimer's 3 to 4 Years Out: Washington University's p-tau217 blood model gives clinicians a non-invasive early warning window years before cognitive symptoms appear, now being incorporated into Alzheimer's Association screening guidelines. ❤️ Microplastics Under Major NIH Investigation for Heart Toxicity: UC Cincinnati receives $3.3M to map the pathways by which microplastics drive atherosclerosis, building on findings that microplastic-laden arterial plaque quadruples the risk of cardiovascular events. 🦠 Young Gut Bacteria Reverses Liver Aging in Animal Study: Fecal microbiota transplantation from young to old mice reversed hepatic aging markers and reduced cancer risk signals at Digestive Disease Week 2026, opening a new pathway for gut-based organ rejuvenation research. 🔬 Largest Human Rapamycin Trial Now Underway: 720 participants receiving two years of weekly low-dose rapamycin represent the most rigorous human longevity intervention test yet conducted, with frailty and systemic inflammation as primary endpoints. ⌚ Lab-on-Skin Wearables Enter the Market: Microneedle biosensors delivering real-time interstitial fluid biochemistry have entered commercial availability, bringing continuous metabolic monitoring out of the clinic and onto the wrist.