Exercise prevents colorectal cancer but vitamins do not: Advice from an M.D.

March 12, 2014

http://www.slate.com/articles/health_and_science/medical_examiner/2014/03/exercise_prevents_colorectal_cancer_but_vitamins_do_not_advice_from_an_m.html

Best to comment on twitter via @markgerstein. Only use this space for comments that are untweetable!