An increasing number of patients are requesting "unvaccinated" blood for transfusions, which can delay care and pose risks to patients’ health, experts warn. There is no evidence that unvaccinated ...

Some natural substances, such as ginger and Ginkgo biloba, could potentially help reduce the risk of clotting. However, research so far is limited. Some of these remedies could also interact with ...

Blood flows through the blood vessels to deliver the needed oxygen and nutrients to the different cells in the body. The blood clotting process or coagulation is an important process that prevents ...

Angela Ryan Lee, MD, FACC, is a board-certified cardiology and internal medicine physician. She also holds board certifications from the American Society of Nuclear Cardiology and the National Board ...

Lots of people take supplements, like fish oil, melatonin, or ginkgo. The FDA doesn’t regulate these the same way they do prescription and over-the-counter drugs. But that doesn’t mean they’re less ...

A red cell distribution width (RDW) test is a type of blood test that indicates variations in the size of a person’s red blood cells. It can confirm an anemia diagnosis and help determine its cause.

Coughing up a large amount of bright red blood is an emergency and needs immediate medical attention. Treatment may include medications, intubation, or surgery, depending on the cause. Contact a ...