What happened
Researchers at Mass General Brigham used AI to analyze CT scans from more than 25,000 adults and scored the health of the thymus, the organ that trains your immune cells. The pattern was striking: a healthier-looking thymus tracked with roughly 50% lower all-cause mortality, 63% lower cardiovascular death, 36% lower lung cancer risk, and better response to cancer immunotherapy.
What I find powerful is the method. They did not run a new trial. They mined imaging that already exists and let AI surface a survival signal hiding in plain sight. Two papers in Nature back it up.
Healthspan progress will come partly from new biology and partly from reading old data in new ways. This is a clean example of the second path. What predictive signals are sitting unused in your data?
Source
Reported by The Forgotten Organ That Could Predict How Long You Live via sciencedaily.com, published June 1, 2026.