What does science say about blood type O negative?

O negative is a rare blood type, as only 6.6 percent of the population has it. It is also the universal doner; thus, it is highly coveted. EDIT: I was just informed that 6.6 percent of the population with O negative blood type is true for Europe, it is also true for the United States. World wide however, the rate is closer to 3 percent. read more

The good news is that people with type O blood are at a lower risk for pancreatic cancer and face a lower risk of dying from malaria than people with other blood groups; that said, if you have type O, you are twice as likely to be a mosquito magnet than those with type A blood. read more