Imagine being able to detect a future heart attack weeks in advance, just by speaking a few phrases into your smartphone. Ohio State University was able to monitor 180 patients with previous heart issues, and found they could detect different issues that indicated problems. Lung congestions, or certain stumbles while talking provided cues to the software that led to alerts. It caught about 80% of the bad events, but also resulted in about 2 1/2 false warnings each year. Still, this non-intrusive method is accurate enough so that our doctors may be leveraging this in the near future.

Could the sound of your voice reveal hidden heart problems? A new speech analysis app predicts worsening heart failure weeks before the onset of symptoms.