5 Things your blood type says about you – Make sure you see this!

3. Ulcers

The same bacteria that may cause stomach cancers among those with blood types A or AB may up your risk for ulcers if you’re type O, Edgren’s research shows. “This blood group somehow modifies the body’s immunological response to the bacteria, but we don’t know exactly how,” Edgren says. That immune system modification may explain the connection, he adds.