It is important to be cautious when adding fiber to your diet since digestive discomfort can result if change is made too quickly. Be assured, cooked fruit purees, canned fruit and cooked vegetables are still excellent sources of dietary fiber. There are two types of fiber, soluble and insoluble, that contribute to total dietary fiber. These two act quite differently in the intestine. You need both of them, but may want to emphasize one over the other depending on your goals.
Soluble fiber helps hold stools together.
It can be helpful for people who have diarrhea or loose stools as a result of medications or opportunistic infections. Insoluble fiber doesn't absorb water, it simply adds bulk to your stool. It helps to sweep everything through preventing constipation. As you increase fiber in your diet, do it slowly and increase fluid intake. This is important because the action of fiber is facilitated by water.