2 grams of soluble fiber in just ½ cup are cooked barley, oatmeal, oat bran, and quinoa. Soluble fiber is a type of fiber found in plant foods. Because it is not absorbed in the intestine, soluble fiber can bind cholesterol in the intestine and remove it from the body.
Oatmeal, oat bran and high-fiber foods
Soluble fiber can reduce the absorption of cholesterol into your bloodstream. Five to 10 grams or more of soluble fiber a day decreases your LDL cholesterol. One serving of a breakfast cereal with oatmeal or oat bran provides 3 to 4 grams of fiber.
Two Types of Fiber: Soluble & Insoluble
While both are important for your health, soluble fiber is the one that helps to lower blood cholesterol levels. It dissolves in water to form a gel, which moves slowly through the intestines “grabbing” up fat, dietary cholesterol, bile salts, and sugar to be excreted.
Soluble fiber becomes a thick gel in our intestines, which slows digestion (which keeps blood sugars from spiking) and traps fats so they can't all be absorbed (which lowers cholesterol levels).
Soluble fiber attracts water and turns to gel during digestion. This slows digestion. Soluble fiber is found in oat bran, barley, nuts, seeds, beans, lentils, peas, and some fruits and vegetables. It is also found in psyllium, a common fiber supplement.
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.
Soluble fiber can reduce the absorption of cholesterol into your bloodstream. Soluble fiber is found in such foods as oatmeal, kidney beans, Brussels sprouts, apples and pears. Add whey protein. Whey protein, which is found in dairy products, may account for many of the health benefits attributed to dairy.
The study pooled findings from 28 trials in people with normal and high cholesterol levels. It found that a daily dose of about 10 grams of psyllium husk lowered harmful LDL cholesterol 13 mg/dL when taken for at least three weeks.
For example, a diet rich in soluble fiber, plant sterols, and vegetable protein sources, such as soy and nuts, reduced LDL cholesterol by an average of 28.6% in just 4 weeks. These effects continue over the long term.
Eating fiber-rich foods like beans is essential for preventing atherosclerosis ( 9 ). Eating beans is an excellent way to keep cholesterol levels in check, thereby reducing your risk of clogged arteries.
The studies show that psyllium lowers LDL cholesterol 6–24% and total cholesterol 2–20%, with the greatest reductions in studies with unrestricted diets and patients with high baseline cholesterol concentrations.
In addition to treating constipation, Metamucil may also help lower your cholesterol levels, and may improve your blood sugar control if you have type 2 diabetes. Benefiber, on the other hand, is not approved for these uses. Fiber can also decrease your appetite by making you feel fuller for a longer time.
However, insoluble fiber does not lower cholesterol like soluble fiber does. Insoluble fibers don't form a gel and resist fermentation by gut bacteria. Instead, they add bulk to the stool, speed up digestion, and contribute to health in other ways ( 1 ).
There's no evidence that daily use of fiber supplements — such as psyllium (Metamucil, Konsyl, others) or methylcellulose (Citrucel) — is harmful. Fiber has a number of health benefits, including normalizing bowel function and preventing constipation.
Metamucil may be a natural alternative to cholesterol-lowering drugs. When combined with a healthy diet and exercise, it may help lower cholesterol on its own or increase the effectiveness of cholesterol-lowering drugs. Talk with your doctor about your options for lowering your cholesterol.
How much does Metamucil lower LDL cholesterol? In a meta-analysis1 of 8 studies involving 384 people with high cholesterol levels who had been following a low-fat diet for several weeks, adding psyllium supplementation lowered LDL cholesterol an additional 7%.
Completely reversing it isn't possible yet. But taking a statin can reduce the risk of complications from atherosclerosis. It fights inflammation, which stabilizes the plaque. For this reason, statins are often key to treating atherosclerosis.
Both Benefiber and Metamucil are soluble fiber supplements used to treat occasional constipation that may have other helpful benefits in the body.
The best sources of soluble fiber are oats, dried beans and some fruits and vegetables. Although there is no dietary reference intake for insoluble or soluble fiber, many experts recommend a total dietary fiber intake of 25 to 30 grams per day with about one-fourth — 6 to 8 grams per day — coming from soluble fiber.
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