what could cause constipation, gas, dark stool
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
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.