Cancer is not just 'bad luck' but down to environment, study suggests
Cancer is overwhelmingly a result of environmental factors and not largely down to bad luck, a study suggests. Earlier this year, researchers sparked a debate after suggesting two-thirds of cancer types were down to luck rather than factors such as smoking. The new study, in the journal Nature, used four approaches to conclude only 10-30% of cancers were down to the way the body naturally functions or "luck". Experts said the analysis was "pretty convincing".