Stool Volume

Stool volume is an important indicator reflecting gastrointestinal tract function and diet characteristics. The amount of stool excreted per bowel movement or per day may indicate certain physiological or pathological processes in the body.

Normal values: on average 100–250 g of stool per day with a balanced diet.

Increased volume (polyfecalia):

• Increased dietary fiber intake (vegetables, fruits, grains);
• Accelerated intestinal transit (malabsorption);
• Pancreatic insufficiency, celiac disease, inflammatory bowel diseases;
• Use of laxatives.

Decreased volume:

• Low-calorie or high-protein diet (fiber deficiency);
• Constipation, intestinal spastic conditions;
• Disorders of large intestine motility.

Measurement and evaluation of stool volume is important for diagnosing digestive system diseases as part of general stool analysis (coprology).