A researcher at the Food and Drug Administration has published a study that contradicts findings released last spring suggesting that iPods interfered with pacemaker function. That earlier study, accompanied by warnings to grandparents to avoid their iPod-toting grandchildren, had been presented by a 17-year-old high school student at the Heart Rhythm Society's 28th Annual Scientific Sessions.

FDA: iPods Don't Cause Pacemakers to Go on the Fritz