Following your doctor’s instructions is the most important part of preparing for a blood test. Sleeping well, staying hydrated, and avoiding certain foods and drinks can also provide benefits. Blood ...

The blood in your body delivers oxygen to all of your cells. When you breathe and draw fresh oxygen into your lungs, red blood cells bind with the oxygen and carry it through your bloodstream. On a ...

The entire process of donating blood will often take about 1 hour 15 minutes, depending on which blood product a person donates. The actual drawing of whole blood takes about 10 minutes. In this ...

Sarah Mitroff has worn many hats at CNET, including Senior Mobile Editor and Managing Editor of Health and Wellness. Currently, she is a freelance editor. Throughout her career, she's written about ...

Brad Reisfeld is a professor of chemical and biological engineering, biomedical engineering, and public health at Colorado State University. Your blood serves numerous roles to maintain your health.

Blood clots are semisolid clumps of blood that form in veins or arteries. Being aware of the signs and symptoms can help people seek treatment if they experience them. A blood clot may be stationary ...