Tens of thousands of people have already volunteered to donate blood. But donations will also be needed in the coming weeks.

The blood type diet is a popular diet that suggests your ABO blood group may determine the best foods for you to eat. However, very little scientific research supports its claimed benefits. The blood ...

Research suggests drinking alcohol may thin the blood by affecting platelets, which are the parts of blood that initiate coagulation, or clotting. However, alcohol may also increase the risk of blood ...

Doctors can check people’s blood for typical or atypical carbon dioxide (CO2) levels to help diagnose certain medical conditions. For example, a carbon dioxide test or CO2 test can help diagnose ...

In TODAY.com's Expert Tip of the Day, a trainer shares her favorite exercise to help help lower blood sugar and prevent ...

Blood – everyone's got it. In fact, an adult who weighs between 150 and 180 pounds has around 1.2 to 1.5 gallons of blood in their body. This makes up approximately 10% of an adult’s weight. Blood ...

Being transfused with the wrong type of blood is incredibly rare, but it has occasionally happened. What does it feel like to have the wrong type of blood coursing through your veins? It feels like ...

The 30th annual Heroes Behind the Badges begins on Monday, as Sioux Falls Fire Rescue and the Sioux Falls Police Department ...

Blood pressure. It’s one of the most important measurements in medicine. And yet, taking it correctly is kind of an art. It’s fluid, it changes, and it can be impacted by something as simple as being ...

Blood in the stool is the result of bleeding in your gastrointestinal (GI) tract. The GI tract includes organs like the stomach, small intestine, and large intestine (colon). Seeing blood in your ...