These factors help define the eight most common blood types: A positive, A negative, B positive, B negative, O positive, O negative, AB positive and AB negative, says the Red Cross. But of these ...

According to the American Red Cross, the most common blood type is O positive, which is the blood type for 37% of the population. The second most common blood type is A positive. There are over ...

This same study discovered people with the O and AB blood types had about a sixth lower chance of developing pancreatic cancer. The most common blood type in the UK is O positive, followed by A ...

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 ...

After adjusting for sex and other factors, the team found that people with blood type O - the most common blood type - had a 12 per cent lower risk of suffering a stroke compared to other blood types.