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Pros and Cons of a High-Fiber Diet

author image Ann Jamerson
Ann Jamerson began writing ads and informational brochures for research trials in 2003 during an internship at an alcohol and drug research center. She assisted in writing and editing manuscripts concerning the breast cancer genes and psychosocial effects on affected patients. She received her Bachelor of Science in biology from the University of California, San Diego and is currently attending nursing school.
Pros and Cons of a High-Fiber Diet
A woman is standing on a bathroom scale. Photo Credit kzenon/iStock/Getty Images


Fiber refers to types of carbohydrates that the body cannot break down or absorb. Even though your body cannot absorb it, fiber is a necessary nutrient as it helps maintain health in various body systems. The average person should consume between 20 and 35 grams of fiber each day; but according to the Joslin Diabetes Center, most Americans only consume half that amount.

Weight Management

High-fiber foods have more density, meaning that they require more chewing time, which gives your body more time to register that it’s full. High-fiber foods also sit longer in your stomach before moving through the rest of your digestive tract, which helps you feel fuller longer and reduce snacking between meals.

Digestive Tract Regulation and Health

Fiber helps regulate the digestive tract and bowel movements by slowing down the progression of stools. This helps the body absorb more water. Also, fiber adds bulk to stools, making them soft and easier to pass and reducing the incidence of constipation and irritable bowel syndrome. Soft and bulky stools may also help sweep out toxins and carcinogens from the colon, according to Jackson Siegelbaum Gastroenterology.

Cholesterol Management

Soluble fiber found in oats, oat bran, beans and some fruits helps to reduce levels of low-density lipoprotein, or bad, cholesterol by inhibiting its absorption into the bloodstream. High levels of low-density lipoprotein cholesterol can lead to heart disease.

Blood Sugar Regulation

Fiber slows down the absorption of the sugar in the digestive system. This helps maintain even levels of blood sugar and reduce the incidence of potentially dangerous blood sugar spikes. People with diabetes who eat at least 50 grams of fiber per day may be able to control their blood glucose levels better than those who eat less.

Bloating, Cramping and Flatulence

Increasing dietary fiber does not have many cons. However, because fiber does absorb water, you must increase water intake as you increase fiber. Consuming too little water while increasing fiber intake can cause bloating, cramping and increased flatulence as fiber moves through the digestive tract. You should increase your fiber intake slowly daily until you reach the recommended daily value.

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