Against the backdrop of an alarming increase in the number of people under 50 being diagnosed with bowel cancer, researchers are urging people to bump up their fiber intake and improve their eating habits if they want to reduce their risk of deadly digestive cancers. Two recent studies expand on existing evidence that a diet rich in fruits, vegetables, whole grains, fish, legumes and dairy may protect against the risk of gastrointestinal (GI) cancers — including bowel — and improve the outcomes of these diseases.