Stomach cancer: Type A increases risk
People with blood group A had a 20 percent greater chance of developing gastric cancer compared to people with blood group O, according to a Swedish study from the Karolinska Institute. These people may be more vulnerable to other stomach cancer risk factors such as cigarette and alcohol use, according to DailyMail.co.uk.
Meanwhile, the same Swedish paper found that those with type O blood had an increased risk for stomach ulcers; they may be more susceptible to the Helicobacter pylori bacteria that cause the stomach sores.
