A study was conducted with 400,000 people from nine countries, who were divided into five sets according to their consumption of fiber and presented at an International Conference in France. This study showed that fiber was particularly important in reducing cancer of the colon and rectum.
Medical experts believe up to 30% of all cancers in the developed world are associated with nutritional factors and could be avoided by better-balanced diets.
EPIC (European Prospective Investigation of Cancer and Nutrition) study, which began 15 years ago, showed a decreased chance of developing colon cancer in people eating lots of fish, but a raised risk in those consuming large amounts of preserved meats such as ham and bacon .They also showed that people who smoke a pack of cigarettes a day and drink more than a bottle of wine are 50 times more likely to suffer from throat cancers.
Hence people are advised to eat five portions of fruit and vegetables a day to achieve optimum health and avoid cancer. These studies give us a truthful picture of the relationship between cancer and diet.