Fibre Supplementation & Bowel Control
Patient Information Sheet
South Island Hemorrhoid Clinic Fiber Supplementation & Bowel Control
The Most Important Step in Preventing and Treating Hemorrhoids
Why Bowel Control Matters?
If bowel movements were perfectly regulated in everyone, hemorrhoids would be uncommon. In reality, constipation, straining, irregular stools, and prolonged time on the toilet are major contributors to hemorrhoidal disease. For this reason, controlling stool consistency and bowel habits is the single most important step in both preventing and treating hemorrhoids.
​
Most People Do Not Get Enough Fiber
Despite common beliefs, most people do not consume enough dietary fiber. This remains true even for
individuals who consider their diet to be healthy, vegetarian, or vegan. Population studies consistently show that average daily fiber intake falls well below recommended levels. The Institute of Medicine recommends approximately 25–38 grams of fiber per day depending on age and sex, yet average intake in North America is often less than half of this amount.
Why Fiber Supplements Are Helpful?
Because it is difficult to consistently meet fiber targets through diet alone, fiber supplementation is often necessary. The specific type of fiber is less important than regular, consistent use. In practice, the best fiber is the one you tolerate and will take daily.
​
Which Fiber Should You Use?
Many fiber options are effective, including ground flaxseed, wheat fiber, chia seeds, psyllium (e.g., Metamucil), and other commercial fiber products. Dosing should be appropriate for body weight and adjusted gradually to minimize bloating.
Soluble fibers are particularly helpful. Inulin (Iâ– Nâ– Uâ– Lâ– Iâ– N), found in products such as Benefiber, is easy to incorporate into daily routines and works well alongside other fiber sources. Inulin also acts as a prebiotic, supporting healthy gut bacteria. Please see our separate handout on prebiotics for more information.
​
Key Take-Home Points
Stool consistency matters more than stool frequency
Most people require fiber supplementation despite a healthy diet
The best fiber is the one you will take every day
Combine fiber supplementation with adequate fluids and healthy eating
​
Selected Evidence & Literature
Institute of Medicine. Dietary Reference Intakes for Fiber: most adults do not meet recommended intake levels.
Alonsoâ– Coello P et al. Fiber for the treatment of hemorrhoids. Cochrane Review. Fiber reduces bleeding and improves
symptoms.
Slavin JL. Fiber and prebiotics: mechanisms and health benefits. Nutrients.
​
This handout is for patient education and does not replace individualized medical advice.