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J&J, Apple to Study if Apple Watch Can Reduce Stroke Risk

Janssen Pharmaceutical opened enrollment for a study, with Apple, exploring whether the Heartline Study app on the iPhone and heart health features on Apple Watch can reduce the risk of stroke, said the Johnson & Johnson company Tuesday. Heartline is designed to see if features of the watch can improve health outcomes with earlier detection of atrial fibrillation, it said. U.S. residents 65 and older who own an iPhone 6 or later and are willing to give access to their Medicare claims data are eligible. Participation will span three years.