Fiber components of vegetables, the body can not digest was divided into two groups, with both groups , which are important for the normal intestine and excretion. : 1. Soluble . Similar gel. When taken with water helps the digestive system back to normal. These findings are an important source of fiber, oats , seeds and nuts . Fruits . Group 2. Insoluble . Excluding the water. Can move through the digestive system more quickly. And more effective than the first group. By going to increase food digestion and absorption , and ( waste ) and waste softer. These findings are important sources of fiber . Wheat crust . Food / Cereals grain bread . And vegetable types .