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.
Causes. Constipation happens when the colon absorbs too much water. This can occur if the muscles in the colon are contracting slowly or poorly, causing the stool to move too slowly and lose more water. These are the most common causes of constipation: 1) Lack of fiber in the diet