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How The Heart Works

The body requires oxygen to carry on the process of life. A network of arteries and veins transport oxygen-rich blood to the body and return oxygen-poor blood to the lungs. At the center of this conti...
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Calculator: Ovulation Date Tool
Podcast: Podcast: 4 Nutrients for a Healthy Colon
Quiz: Anthrax Quiz
Risk Assesment: Acid Reflux (GERD) Risk Assessment
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More U.S. Adults Using Marijuana Than Ever

Daily use nearly doubled between 2002 and 2014, study finds

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