It is possible that skipping staple foods may cause constipation. However, it is possible that constipation may not occur for foods with a high intake of dietary fiber. 1. Lead to constipation: not eating staple food for a long time, only eat a small amount of food rich in fiber and high protein, may lead to the digestive system becomes weaker, intestinal peristalsis slows down, so that feces can not be discharged in a timely manner, and the intention to poop will also become less. Therefore, it will mostly lead to constipation. 2. does not lead to constipation: if you do not eat staple food, but the intake of dietary fiber content is more, generally do not appear constipation, because the intake of too much dietary fiber-rich food, will increase the volume of stools, but also stimulate the gastrointestinal tract peristalsis, which helps to defecate. For people with constipation caused by not eating staple foods, it is recommended to improve the diet structure, and if necessary, intermittently take some laxative drugs to improve the symptoms of constipation.