Eat more fiber. You've probably heard it before. But do you know why fiber is so good for your health?
Dietary fiber — found mainly in fruits, vegetables, whole grains and legumes — is probably best known for its ability to prevent or relieve constipation. But foods containing fiber can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes and heart disease.
Selecting tasty foods that provide fiber isn't difficult. Find out how much dietary fiber you need, the foods that contain it, and how to add them to meals and snacks.
Dietary fiber, also known as roughage or bulk, includes the parts of
plant foods your body can't digest or absorb. Unlike other food
components, such as fats, proteins or carbohydrates — which your body
breaks down and absorbs — fiber isn't digested by your body. Instead, it
passes relatively intact through your stomach, small intestine and
colon and out of your body.
Fiber is commonly classified as soluble, which dissolves in water, or insoluble, which doesn't dissolve.
Dietary fiber — found mainly in fruits, vegetables, whole grains and legumes — is probably best known for its ability to prevent or relieve constipation. But foods containing fiber can provide other health benefits as well, such as helping to maintain a healthy weight and lowering your risk of diabetes and heart disease.
Selecting tasty foods that provide fiber isn't difficult. Find out how much dietary fiber you need, the foods that contain it, and how to add them to meals and snacks.
What is dietary fiber?
Fiber is commonly classified as soluble, which dissolves in water, or insoluble, which doesn't dissolve.
- Soluble fiber. This type of fiber dissolves in water to form a gel-like material. It can help lower blood cholesterol and glucose levels. Soluble fiber is found in oats, peas, beans, apples, citrus fruits, carrots, barley and psyllium.
- Insoluble fiber. This type of fiber promotes the movement of material through your digestive system and increases stool bulk, so it can be of benefit to those who struggle with constipation or irregular stools. Whole-wheat flour, wheat bran, nuts, beans and vegetables, such as cauliflower, green beans and potatoes, are good sources of insoluble fiber.
9 Health Benefits of Fiber
There's no shortage of research showing how fiber may boost your health. Some of its top potential benefits include:
- Blood sugar control: Soluble fiber may help to slow your body's breakdown of carbohydrates and the absorption of sugar, helping with blood sugar control.
- Heart health: An inverse association has been found between fiber intake and heart attack, and research shows that those eating a high-fiber diet have a 40 percent lower risk of heart disease.1
- Stroke: Researchers have found that for every seven-grams more fiber you consume on a daily basis, your stroke risk is decreased by 7 percent.2
- Weight loss and management: Fiber supplements have been shown to enhance weight loss among obese people,3 likely because fiber increases feelings of fullness.
- Skin health: Fiber, particularly psyllium husk, may help move yeast and fungus out of your body, preventing them from being excreted through your skin where they could trigger acne or rashes.4
- Diverticulitis: Dietary fiber (especially insoluble) may reduce your risk of diverticulitis – an inflammation of polyps in your intestine – by 40 percent.5
- Hemorrhoids: A high-fiber diet may lower your risk of hemorrhoids.
- Irritable bowel syndrome (IBS): Fiber may provide some relief from IBS.
- Gallstones and kidney stones: A high-fiber diet may reduce the risk of gallstones and kidney stones, likely because of its ability to help regulate blood sugar.
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