Cleaning the colon can be accomplished through increasing fruit and vegetable servings, eating whole grains, consuming ground flaxseeds and drinking more water, according to About.com. These are considered safe ways of cleansing the colon, compared to other methods, such as the use of laxatives and colonic irrigation.
Water is healthy for the digestive system and helps clean out matter in the colon, reports About.com. Drink plenty water to the point where the color of the urine is light yellow. This means that the body is getting enough water. Dark urine is a sign that the body needs more water.
Eating 8 to 10 servings of fruits and vegetables is enough to clean the colon, notes About.com. For instance, a person can eat blueberries, raspberries or blackberries with cereal in the morning. Vegetables can be consumed as snacks with hummus as dip. Ground flaxseed is a colon cleanser that can be applied on such foods as cereal, salad or oatmeal.
Dieters can flip the food pyramid, claims About.com. For instance, fruits and veggies are at the top of the food pyramid, and grains should follow. Protein in the form of fish, meat and eggs is reserved for the bottom. Dieters can indulge in a treat every so often.
Nuts also have colon cleansing properties, explains About.com. Whole grains come in the form of brown rice, barley, oats, millet, spelt, buckwheat and rye. Avoid bread products that contain the "enriched" label. Breads with these labels do not contain whole grain.