Sleep patterns may reveal hidden heart risks (opens in new tab)

People whose sleep apnea changes dramatically from night to night are 30% more likely to have a heart attack, stroke, or heart failure, reveals a new study from Flinders University. The research, published in the journal SLEEP, shows that it is not just how severe sleep apnea is that matters, but how much it fluctuates, with wide night-to-night swings in breathing problems during sleep linked to a higher risk of serious heart disease.