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It’s true. High fiber foods make you poop. They also make you feel full faster. That means you’re likely to eat less. When you east less, you’re less likely to pack on extra pounds — pounds that can lead to health problems later.
Being overweight can lead to a higher risk of heart disease, stroke, diabetes and other serious health problems.
How? Your body can’t break down fiber. As it moves through your body, it slows digestion. It keeps you regular by making your stools softer and easier to pass. There are two types of fiber — soluble and insoluble. Both should be part of a healthy diet.
This type of fiber attracts water much the way oats absorb water to turn into oatmeal. Soluble fiber turns into a gel during digestion. High-fiber foods that include soluble forms of fiber include oatmeal, nuts, apples, blueberries, seeds, lentils, peas, and beans.
Foods that contain high levels of soluble fiber help lower cholesterol, a key risk factor for heart disease. It does so by attaching to cholesterol particles and sweeping them along as fiber moves out of the body.
Fiber also helps fight diabetes. When your body doesn’t absorb foods that contain soluble fiber, you don't experience blood sugar spikes that put you at risk for Type 2 diabetes.
Finally, high fiber foods help you stay regular because they absorb water as they pass through your system. That helps bulk up your stool. In fact, fiber supplements generally contain mostly soluble fiber.
This type of fiber is found in the seeds and skins of fruit (so always eat those peels!) — along with vegetables and whole grains. It adds bulk to the stool and seems to help food pass more quickly through the stomach and intestines. If you’re irregular (constipated), eat more high-fiber foods to get things moving. Insoluble fiber can improve other bowel-related health problems, such as hemorrhoids and bowel control.
Most Americans don’t eat enough high-fiber foods, according to current guidelines by the U.S. Department of Agriculture and U.S. Department of Health and Human Services. Women need 25 grams of fiber per day, but usually consume only 13 grams. Men need 38 grams per day, but eat only about 17.
Try these tips for adding more high fiber foods to your diet:
Remember, it’s not just how much fiber you’re eating that keeps you healthy, but what kinds of fiber you choose to eat. What are your favorites?
Originally published 11/5/2015; Revised 2019, 2022
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