The main mechanism of action of the foods that open the stool is to increase the volume of the stool, that is, foods rich in dietary fiber, which are more likely to form stool. Because these fiber-rich foods can promote increased water in the intestinal tract, which can make the stool easier to pass and avoid dry, hard stools. Foods that promote gastrointestinal dynamics can also play a role in passing stools. The more common laxative foods are leeks, celery, bananas, bitter chrysanthemum, bitter gourd, bitter vegetables, loofah, bananas, sweet potatoes, yams, pineapples, apples, honey, corn, millet, sorghum and other foods. In addition to eating these foods, avoid eating spicy, oily, and high-protein foods, as they tend to cause dry stools.