Exercise physiologist Courtney Conners checks Mario Oikonomides' vital signs before his cardiac rehab workout at the University of Virginia Health System clinic. Francis Ying/Kaiser Health News hide caption

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Francis Ying/Kaiser Health News

Cardiac Rehab Saves Lives. So Why Don't More Heart Patients Sign Up?

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Tracy Solomon Clark didn't realize that the shortness of breath and dizziness she felt at age 44 was actually serious heart disease. Benjamin Brian Morris for NPR hide caption

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Benjamin Brian Morris for NPR

Hidden Heart Disease Is The Top Health Threat For U.S. Women

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Lipitor (atorvastain calcium) tablets made by Pfizer. PAUL J. RICHARDS/AFP/Getty Images hide caption

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PAUL J. RICHARDS/AFP/Getty Images

What To Think About Conflicting Medical Guidelines

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A Metronome Can Help Set The CPR Beat

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Researchers say poor sleep quality, too much sleep and too little sleep all play a role in heart health. iStockphoto hide caption

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Good Quality Sleep May Build Healthy Hearts

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Michael Arnott, of Cambridge, Mass., says he used to have trouble staying awake on long drives. Sleep specialists discovered he has obstructive sleep apnea, though not for the most common reasons — he isn't overweight, and doesn't smoke or take sedatives. M. Scott Brauer for NPR hide caption

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M. Scott Brauer for NPR

Snooze Alert: A Sleep Disorder May Be Harming Your Body And Brain

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A Stanford University study explored the medical records of millions of people looking for patterns. People taking proton-pump inhibitors for chronic heartburn seemed to be at somewhat higher risk of having a heart attack than people not taking the pills. IStockphoto hide caption

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Data Dive Suggests Link Between Heartburn Drugs And Heart Attacks

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Women Having A Heart Attack Don't Get Treatment Fast Enough

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Some men take testosterone hoping to boost energy and libido, or to build strength. But at what risk? iStockphoto hide caption

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Aspirin has been prescribed for decades as a simple way to reduce heart disease risk, but doctors still aren't sure how it works. iStockphoto.com hide caption

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Insomnia, feeling isolated, and bursts of anger are symptoms of the anxiety disorder known as PTSD. iStockphoto.com hide caption

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