Not everyone on Earth has the same blood type. Researchers are still trying to figure out why there are so many, but these different blood types can have deadly downsides. The surface of our red ...

Are Blood Type and COVID-19 Linked? Several studies have examined whether certain blood types are more susceptible to coronavirus infections and severe disease, and while researchers have found ...

Blood is pretty fascinating—it’s not just a red liquid, but a mix of different cells and proteins, each with a specific job. The liquid part, called plasma, carries nutrients, hormones, and ...