April 14, 2011 10:22 am Fighting Cancer With Diet and Exercise A doctor says maintaining a healthy lifestyle can help prevent cancer, as well as extend the life of patients diagnosed with the disease. Local 1:45 NYPD enters Columbia University in riot gear to clear protest 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 1:01 Biden administration plans to reclassify marijuana as a Schedule III drug 2:28 King Charles returns to public duties amid cancer diagnosis