Roughage is a general term used to identify a carbohydrate contained in many different types of foods. Sometimes referred to simply as dietary fiber, roughage is understood to be an essential part of any healthy diet plan. The main function of roughage is to add bulk to the daily diet, which in turn aids in the digestion process and healthy function of the bowel system.

Roughage comes in many different forms. Fruits are one common source of roughage, with apples, pears, and whole grapes being common examples. Whole grains also are common examples of roughage, with wheat products such as bread and crackers considered to be common ways that people add bulk to the diet. Vegetables of just about every description from kale to potatoes also are considered to have bulk and provide excellent sources of roughage.

There are two basic advantages to making sure there is enough roughage in the daily diet. First, the fact of the bulk of foods considered to be roughage can help an individual to feel full more quickly. This can help to minimize the chances of overeating and thus help anyone who wishes to lose weight. Second, because roughage cannot be totally absorbed by the body, the unused portion of the bulk material helps to clean out the digestive tract and bowel system of any stray debris. The cleaning action helps to keep these vital organs and tracts less susceptible to infection and disease, and aids in the overall health of the individual.

Roughage comes in two different types, usually referred to as soluble and insoluble fiber. Water soluble fiber includes cellulose and lingnin, while insoluble fiber would include such foods as gum products and pectin. Both types of roughage are considered to be essential forms of dietary fiber, working together to help keep the body balanced and healthy. In general, healthcare professionals will encourage patients to include at least come roughage in one to two meals per day, often favoring fresh foods over packaged versions.