Diverticulitis is a fairly rare gastro-intestinal condition. It occurs much more often in the elderly, and is characterized by bulging pockets in the lining of the intestines. The current train of thought is that one of the main causes of this disease is a lack of fiber. There are several changes that you can make to your diet to reduce the severity of symptoms.Preventative measuresAs a lack of fiber can cause the disease, it is not surprising that fiber can also lessen the symptoms of diverticulitis. Fiber is beneficial to a healthy digestive track and strong colon. It is also known to prevent constipation, and facilitate the process of excreting stool from the body. A good number to aim for is 30 grams of fiber per day. The average American does not consume their daily recommended dose of fiber and for this reason, diverticulitis is more prominent in this region than in other parts of the world.Try to incorporate more fiber into your daily diet. Try a diet that consists of mostly liquidsMany doctors recommend reducing the consumption of solid foods if you have moderate to severe diverticulitis symptoms. You can eventually ease yourself back into a normal diet, but you should follow a strict diet until your symptoms are manageable. Try sticking to liquid based foods. Some examples are soup, fruit nectar or juice and popsicles.Reduce the intake of solid foods if you have sever symptoms. Avoid problem foodsSome foods cause problems and flare-ups. As such, it is a good idea to avoid them if you have diverticulitis. If a particular food is hard to digest, it is a good idea to avoid it. Some beans, vegetables and nuts prove particularly challenging for the body to digest, and could complicate your condition. It is also a good idea to avoid seeds, as they can get trapped in the pockets of your intestines. Avoid these products all together.Restrain from eating foods that are hard to digest. Many struggle with diverticulitis on a daily basis, but with a few dietary changes, the symptoms are easily manageable. By eating the right types of healthy foods and avoiding problem foods, you can reduce the symptoms of your condition.