b'To mark To mark World Cancer Day World Cancer Day, , Jason Wallen, MD Jason Wallen, MD, discusses t, discusses t reatment options reatment options for lung cancer. for lung cancer. Lawrence Chin, MD Lawrence Chin, MD, and medical student Hans Kim outline, and medical student Hans Kim outline a low-carbohydrate diet that might improve the prognosis a low-carbohydrate diet that might improve the prognosis of some brain tumor patients. of some brain tumor patients. Leslie Kohman, MD Leslie Kohman, MD, explains the, explains the top lifestyle practices anyone can do top lifestyle practices anyone can do to lessen the chances of getting cancer. to lessen the chances of getting cancer.'