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.
When the colon's muscle contractions are slow or sluggish, the stool moves through the colon too slowly, resulting in too much water being absorbed. Some of the most common causes of constipation include the following: Medications. Lack of exercise. Not enough liquids. Not enough fiber in the diet. Irritable bowel syndrome
Dark stool is caused by upper GI tract bleeding. Generally, we get concerned when we see blood or red-tinged feces, but dark, tarry stool can indicate that something is wrong and is as much of a concern as red, obviously bloody stool. Tarry, black stool is called melena, and it is often foul smelling.