The amount you eat may not have a lot of impact on how much stool you produce. Many disorders cause large, bulky stools even in people who don't eat a lot.
The size of your stools has more to do with how well you digest your foods than how much you eat. Some types of foods produce larger stools because they don't break down completely. Some gastrointestinal disorders also cause poor food breakdown and absorption, which leads to large, bulky stools.
Normal Stool and Constipation
People vary considerably in their production of stool. Contrary to the beliefs of many, it's not necessary to have a bowel movement every day. As long as your stools remain soft but formed and pass easily, you have a normal stool pattern, even if you only pass stool three times a week, according to the Michigan Bowel Program of the University of Michigan Health System 2.
You might become constipated from not passing stool if you hold back from having bowel movements due to lack of opportunity or out of fear of pain from hemorrhoids or other issues. Constipation can cause larger than normal stools, which may be hard and dry. In some cases, your stools may become smaller, not larger, when you're constipated.
- People vary considerably in their production of stool.
- In some cases, your stools may become smaller, not larger, when you're constipated.
Diet After an Anal Fistula Surgery
What you eat has an effect on how large your stools are. Many raw foods contain both soluble and insoluble fiber. Insoluble fiber, an indigestible type of carbohydrate, found in fruits, vegetables and whole grains, passes through the intestinal tract mostly intact.
Soluble fiber, found in oats, peas, beans and some fruits, absorbs water, creating a soft, large, easily passed stool. If you eat a high-fiber diet, you may have large stools, even if you don't overeat. As long as your stool passes easily, this doesn't cause any health problems.
- What you eat has an effect on how large your stools are.
- Soluble fiber, found in oats, peas, beans and some fruits, absorbs water, creating a soft, large, easily passed stool.
Diseases that affect the digestive tract can cause large, bulky, often foul-smelling stools. Disorders such as celiac disease, which affects digestion of foods that contain gluten, or cystic fibrosis, which affects the production of enzymes that break down food, can both cause larger than normal stools.
If you have irritable bowel syndrome, you may have alternating bouts of constipation and diarrhea. If you have large, bulky, greasy stools that float, let your doctor know. This type of stool can indicate fat malabsorption 1. You might develop serious nutritional deficiencies from malabsorption disorders unless you seek treatment.
- Diseases that affect the digestive tract can cause large, bulky, often foul-smelling stools.
- If you have irritable bowel syndrome, you may have alternating bouts of constipation and diarrhea.
Benefiber & Bloating
If your stools become large and hard, try increasing your fluid intake. When nature calls, try not to put off the call. Going when you feel the need helps avoid constipation. If you have other symptoms, such as fever, abdominal pain, blood in your stools or vomiting, see your doctor.
- If your stools become large and hard, try increasing your fluid intake.
- If you have other symptoms, such as fever, abdominal pain, blood in your stools or vomiting, see your doctor.
Diet After an Anal Fistula Surgery
Benefiber & Bloating
Causes of Foul-Smelling Diarrhea
Lentil Soup for Constipation
Wheat Dextrin & Fiber
Eating and Muscle Contractions Starting in the Stomach
Can Supplements Make Your Stool Smell Different?
Good Diet for Ileostomy Patients
Liquid Diet & Constipation
Food List for Irritable Bowel Syndrome
- The Merck Manual: Overview of Malabsorption
- University of Michigan Health System: Constipation
- Gray JR. What is chronic constipation? Definition and diagnosis. Can J Gastroenterol. 2011;25 Suppl B:7B-10B.
- Chang J, Mclemore E, Tejirian T. Anal Health Care Basics. Perm J. 2016;20(4):15-222. doi:10.7812/TPP/15-222
- Erdogan A, Rao SS, Thiruvaiyaru D, et al. Randomised clinical trial: mixed soluble/insoluble fibre vs. psyllium for chronic constipation. Aliment Pharmacol Ther. 2016;44(1):35-44. doi:10.1111/apt.13647
- Popkin BM, D'anci KE, Rosenberg IH. Water, hydration, and health. Nutr Rev. 2010;68(8):439-58. doi:10.1111/j.1753-4887.2010.00304.x
- Portalatin M, Winstead N. Medical management of constipation. Clin Colon Rectal Surg. 2012;25(1):12-9. doi:10.1055/s-0032-1301754
- Mcclurg D, Walker K, Aitchison P, et al. Abdominal Massage for the Relief of Constipation in People with Parkinson's: A Qualitative Study. Parkinsons Dis. 2016;2016:4842090. doi:10.1155/2016/4842090
- Rao SS. Biofeedback therapy for constipation in adults. Best Pract Res Clin Gastroenterol. 2011;25(1):159-66. doi:10.1016/j.bpg.2011.01.004
- Yang H, Ma T. Luminally Acting Agents for Constipation Treatment: A Review Based on Literatures and Patents. Front Pharmacol. 2017;8:418. doi:10.3389/fphar.2017.00418
- Chandar AK. Diagnosis and treatment of irritable bowel syndrome with predominant constipation in the primary-care setting: focus on linaclotide. Int J Gen Med. 2017;10:385-393. doi:10.2147/IJGM.S126581
- Stool Softeners. MedlinePlus.
- Constipation. National Institute of Diabetes and Digestive and Kidney Diseases.
- Turan N, Atabek Aşt T. The effect of abdominal massage on constipation and quality of life. Gastroenterol Nurs. 2016;39(1):48-59.
- Yang J, et.al. Effect of dietary fiber on constipation: a meta-analysis. World Journal of Gastroenterology. 2012;18:7378-83.
- Wald A. Patient information: Constipation in adults. UpToDate
A registered nurse with more than 25 years of experience in oncology, labor/delivery, neonatal intensive care, infertility and ophthalmology, Sharon Perkins has also coauthored and edited numerous health books for the Wiley "Dummies" series. Perkins also has extensive experience working in home health with medically fragile pediatric patients.