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Why Do We Need Fiber in Our Diet?

by
author image Staci Gulbin, MS, MEd, RD, LDN
Originally from Maryland, Staci Gulbin started writing professionally in 2010. Her work has been published on a Baltimore news website as well as other online entities. Gulbin holds graduate degrees in biology and nutrition from New York University and Columbia University, and is a registered dietitian and certified personal trainer.
Why Do We Need Fiber in Our Diet?
Fiber from fruits and grains is good for you in more ways than one. Photo Credit merznatalia/iStock/Getty Images

Fiber is the part of foods that the body cannot digest or absorb. Found in whole grains, fruits, vegetables and legumes, fiber has many health benefits, such as decreasing the risk of heart disease and aiding in digestive health. Therefore, it is important to consume fiber-rich foods every day to improve the length and quality of life.

About Fiber

Why Do We Need Fiber in Our Diet?
Beans are a form of soluble fiber Photo Credit Ingram Publishing/Ingram Publishing/Getty Images

Two types of fiber are needed for overall health. Insoluble fiber, found in whole-wheat flour products, wheat bran, nuts and vegetables, increases stool bulk and promotes movement of food through the digestive system. Soluble fiber, found in oats, peas, beans, apples, carrots and citrus fruits, dissolves in water to form a gel-like substance that slows absorption of food components, thus allowing the body to retain more nutrients.

Fiber Recommendations

Why Do We Need Fiber in Our Diet?
Fiber Recommendations Photo Credit Olga Bosnak/iStock/Getty Images

The recommended daily intake of fiber is 25 grams per day for women and 38 grams a day for men, which equates to about 14 grams of fiber per 1,000 calories consumed. This recommended daily intake can easily be achieved through regular consumption of whole grains and beans, as well as two to three servings of fruits and vegetables each day.

Fiber Health Benefits

Why Do We Need Fiber in Our Diet?
Fiber Health Benefits Photo Credit Eduard Titov/iStock/Getty Images

Increased consumption of fiber can improve many aspects of health. Fiber-rich foods such as whole-grain breads and cereals help to increase stool bulk, which helps to prevent constipation. In addition, fiber increases bowel integrity and function, thus minimizing the risk of conditions such as hemorrhoids and diverticulitis. Fruits, vegetables and legumes that contain soluble fiber have been found to lower "bad" LDL cholesterol levels and slow the absorption of sugar in the body, which in turn can decrease the risk of diabetes and heart disease. Fiber can also facilitate weight loss. Because of its bulking quality, fiber can make you feel full and prevent overconsumption of calories during meals and snack times.

Research on Fiber Benefits

Why Do We Need Fiber in Our Diet?
Research on Fiber Benefits Photo Credit Jacob Wackerhausen/iStock/Getty Images

A 2011 study reported by the National Institutes of Health found that those who consumed higher amounts of fiber over a nine-year period had a significantly less chance of dying from chronic disease than those who consumed less fiber. Fiber consumption of study participants ranged from 12.6 grams to 29.4 grams per day in men and from 10.8 grams to 25.8 grams per day in women. Those who consumed the most fiber each day had a 22 percent lower risk of death over the nine-year period than those who consumed the least amount of fiber.

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