About 45% of US adults have high blood pressure — that's more than 108 million Americans. High blood pressure, or hypertension, is one of the major risk factors for heart disease and stroke, which are ...

This week we’re running a series in collaboration with the Australian Red Cross Blood Service looking at blood: what it actually does, why we need it, and what happens when something goes wrong with ...

Blood plasma is a light yellow liquid that makes up about half of a person’s blood. Blood plasma is vital for fighting infection, maintaining correct blood pH levels, helping blood to clot, and ...