Give it up for fruit and vegetables,says the AMERICAN INSTITUTE FOR CANCER RESEARCH.Check out these reasons for including at least 5 serving a day. 1.Their anti-oxidants and phytochemicals may help prevent up to 20% on all cancers. 2.Their low kilojoule count and high fibre and folate may help keep u trim. 3.Their phytochemicals,soluble fibre and folate may help reduce heart-disease risk.