Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

Sorry, Yogis. New research suggests that the ancient practice may not provide as many cardiovascular benefits as once thought ...

Red blood cells transport oxygen throughout your body, including to vital organs and tissues. They also help your body get rid of carbon dioxide. Too little or too many red blood cells may be ...

White blood cells help your body fight inflammation and infections. A high or low white blood cell count may be associated with a number of short-term or long-term health conditions. White blood cells ...

Could a simple blood test reveal how well someone is aging? A team of researchers led by Wolfram Weckwerth from the ...

A new study by the University of California, Davis, shows how cells work together to avoid a sudden drop in blood sugar.