The US government has just handed scientists the largest map of human health ever assembled. It pairs more than half a million genomes with real medical records, and it arrives as the programme behind it faces deep budget cuts.

The database comes from All of Us, a research programme run by the National Institutes of Health. On June 30, 2026, the NIH released data from more than 747,000 participants. That makes All of Us the world’s largest integrated store of genomes and electronic health records. It links 535,000 whole genome sequences to nearly 482,000 medical records. No rival can match that depth and breadth.

The scale is the point. To tailor a treatment to one person, researchers first need patterns drawn from many. All of Us bundles genomes with doctors’ notes, diagnoses, and test results. It adds health surveys, wearable data from devices like Fitbits, and even local air quality. The trove now holds more than 1.3 billion genetic variants. The eventual goal is one million volunteers.

Built for the people usually left out

What sets All of Us apart is who is in it. More than 86 per cent of participants come from groups long overlooked in medical research. That includes racial and ethnic minorities, older adults, women, people with disabilities, and rural residents. Participants span all 50 states.