Your organs don't age at the same speed, and there's one specific spot in your brain that's the best clue for how old you 'really' are.
medRxiv · March 17, 2026 · 10.64898/2026.03.14.26348392
The Takeaway
By scanning 134,000 people, researchers found that 'aging' isn't a uniform process; an individual can have a 'young' heart but an 'old' kidney. They identified that the aging of the cerebrum is the strongest indicator of overall decline and that each organ's specific 'age' predicts different future diseases.
From the abstract
While aging manifests differently across organs and individuals, existing approaches to measure it lack the spatial resolution to capture this complexity. Here, we develop an approach that applies multi-modal imaging, segmentation algorithms, and deep-learning to assess organ-specific aging across 39 anatomical regions in a total of 134K individuals in the UK Biobank. Our analysis reveals significant organ aging heterogeneity across and within individuals and a remarkable prevalence of organ-spe