Q: My blood pressure is a little high. My doctor is making me do constant at-home testing, take medication and check in with a nutritionist. Is it all necessary? -- Claire T., Pittsburgh ...

Most major blood groups were identified early in the 20th century. Many discovered since, like the Er system first described ...

Blood tests are useful tools for doctors and scientific researchers: they can reveal a lot about a body's health. Usually, a blood sample is taken to get a picture of the large molecules that are ...

Poisoning caused by too much of the popular nutrient is rare, but cases are ticking up. Experts warn that people may not be aware they’re getting too much.

Millions of people donate blood each year, saving countless lives. After a donation, plasma and white blood cells are ...

The researchers found no significant difference between the outcomes of patients with colorectal cancer, whether or not the ...

Researchers have developed a new platform that can replicate different types of blood vessel structures. Blood vessels are less like straight pipes and more like a crowded city road map, with turns, ...

For the first time, clumps of human cells called organoids were fully integrated with the brains of rats—and influenced their behavior.

Drawing on his love of fly-fishing, he developed a balloon catheter that removes blood clots from patients’ limbs in a ...

A mouse study shows that beige fat, previously known for its heating function, may also lower blood pressure by keeping blood vessels relaxed. The same may go for brown fat in humans.

The National Institutes of Health failed to protect brain scans that an international group of fringe researchers used to ...

Platelets are small, anucleate blood cells that play an essential role in hemostasis. Their primary task is to recognize vascular injury, become activated, and aggregate via their surface receptor ...