NPR News -- In 2007, a researcher reported that an iPod can interfere with a pacemaker or an implanted defibrillator. But the study was questioned, largely because the researcher, Jay Thaker, was a 17-year-old Michigan high-school student. Now, new research shows that Thaker was onto something — in fact, the magnets used in headphones are more than strong enough to disrupt implanted cardiac devices.
