Some preliminary studies have observed that people with blood type O appear to have certain long-term health advantages . This group, the most common worldwide, has been linked to a lower risk of cardiovascular diseases , such as heart attacks and strokes. It has also been associated with a lower incidence of some types of cancer and with a clotting system that promotes better blood circulation. More efficient tissue oxygenation could contribute to slower aging and better preservation of vital organs.
People with this blood type are more likely to live to 100 years old…