Eat pulses (the seeds of plants in the legume family), such as beans, lentils, and peas, at least three times a week.For instance, include fruit with breakfast and as a snack, and vegetables with lunch and dinner. Include fruits, vegetables, or both with every meal.In general, one serving is a single piece of fruit or a half-cup of raw fruits or vegetables, or a cup of leafy greens. This makes up the five-a-day recommended by the USDA's Dietary Guidelines for Americans. Eat a minimum of three servings of vegetables and two servings of fruit every day.Here are some tips that can help you make the transition to a higher-fiber diet. Aim for up to half your plate to contain some fiber-rich food. To reduce your risk of getting diverticulosis and diverticulitis, add high-fiber foods to each meal. Most people who have diverticulosis have no symptoms, However, sometimes one of the pouches gets inflamed, usually due to a bacterial infection. Diverticulosis is a very common colon condition in which small pouches form on the colon wall.