Various types of potatoes. A staple food, or simply a staple, is a food that is eaten routinely and in such quantities that it constitutes a dominant portion of a standard diet for a given people, supplying a large fraction of energy needs and generally forming a significant proportion of the intake of other nutrients as well.
Constipation is defined medically as fewer than three stools per week and severe constipation as less than one stool per week. Constipation usually is caused by the slow movement of stool through the colon.
Food poisoning can cause abdominal pain, diarrhea, nausea, vomiting, fever, chills, and weakness. Belching or passing gas clears gas from the digestive tract, but when gas is stuck it causes abdominal pain. Constipation is having less than three bowel movements a week, causing hard stools, abdominal pain and more.