A. Cornmeal contains high cellulose content, leading to significant gastrointestinal symptoms. It is difficult for the human digestive tract to break down cellulose. Cornmeal is high in cellulose, which is insoluble, making it hard for our digestive tract to digest food. However, the body breaks down the other components of cornmeal. Consuming cornmeal for longer can also help the digestive system break down cellulose walls, making it easy to access more nutrients.