A daily dose of aspirin should be given to people at high risk of bowel cancer, say scientists. Two pills a day for two years reduced the incidence of bowel cancer by 63% in a group of 861 at-risk patients, a study reported in The Lancet said. Newcastle University's Prof Sir John Burn, who led the study, said the evidence "seems overwhelmingly strong". Other experts said the findings added to a growing body of proof that aspirin could be used in the fight on cancer. The study was conducted on