A blood test could help identify people at higher risk of cognitive decline years before a traditional diagnosis is possible—according to University of East Anglia research published in the journal Gut Microbes.

Working with “digital twins” of patients’ hearts, doctors have improved cardiac ablation outcomes for patients with life-threatening arrhythmias. In the first clinical trials for cardiac digital twins technology, researchers at Johns Hopkins University created digital replicas of patients’ hearts, then tested procedures on those twins before performing them on the real thing. Working with digital twins resulted in faster and significantly more accurate procedures that reduced recurrences of arrhythmias for patients, compared to traditional methods.