MRI-LEVEL BRAIN AGE. FROM A WEARABLE.
BrainYears™. Functional brain age. 643 biomarkers. Built to measure and and train. Developed in collaboration with the Buck Institute for Research on Aging.
Developed in collaboration with the Buck Institute for Research on Aging
BrainYears™ calculates functional brain age using EEG and ERP, brain responses captured during active cognitive tasks. Unlike structural neuroimaging, it measures function upstream of anatomical decline, tracking how your trajectory changes over time.
In 2025, Stanford researchers published data from nearly 45,000 people showing brain age is the single strongest predictor of overall mortality². A biologically younger brain reduced the risk of death by 40%. A fast-aging brain increased it by 182%.
The BrainYears™ validation study, pre-published by the Buck Institute for Research on Aging in collaboration with Sens.ai, is now available on BioRxiv. It is the first lab-grade functional brain age model in a user-friendly form factor.
The Case for a Brain Age Clock
For decades, medicine has treated the diseases of aging as if they were separate problems. Treat the cancer, then the heart attack arrives. Manage the diabetes, then Alzheimer's follows. Buck Institute President and CEO Eric Verdin calls this "whack-a-mole medicine," and argues the better approach is to target the aging process itself, before diseases appear. That requires knowing which organ is setting the pace. The brain isn't just another organ to monitor. It's the one that predicts how long you live, how well you function, and whether you remain the person making your own decisions.
