Some doctors place the bacterium's involvement as high as 90%, but ulcer-inducing drugs, alcohol, smoking, and other lifestyle stimulants are still a more common factor in the development of these ulcers than given credit lately. At the same time, Blood Type O individuals are at greater risk to develop peptic or duodenal ulcers compared to groups A, B, or AB, while those with H. Pylori infections and or Blood Types A, B, and AB are at a greater risk to develop pancreatic cancer. Gastric cancer is more prevalent with Blood Type A... Full Text