How does dietary fiber reduce cholesterol




















Enriched foods have some of the B vitamins and iron added back after processing, but not the fiber. Whole foods rather than fiber supplements are generally better. Fiber supplements — such as Metamucil, Citrucel and FiberCon — don't provide the variety of fibers, vitamins, minerals and other beneficial nutrients that foods do.

Another way to get more fiber is to eat foods, such as cereal, granola bars, yogurt and ice cream, with fiber added. The added fiber usually is labeled as "inulin" or "chicory root. However, some people may still need a fiber supplement if dietary changes aren't sufficient or if they have certain medical conditions, such as constipation, diarrhea or irritable bowel syndrome.

Check with your doctor before taking fiber supplements. High-fiber foods are good for your health. But adding too much fiber too quickly can promote intestinal gas, abdominal bloating and cramping.

Increase fiber in your diet gradually over a few weeks. This allows the natural bacteria in your digestive system to adjust to the change. Also, drink plenty of water. Fiber works best when it absorbs water, making your stool soft and bulky. There is a problem with information submitted for this request. Sign up for free, and stay up-to-date on research advancements, health tips and current health topics, like COVID, plus expert advice on managing your health.

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Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Long-term effects of guar gum on blood lipids. Atherosclerosis ; 60 : 7 — Long-term effects of guar gum and microcrystalline cellulose on glycaemic control and serum lipids in type 2 diabetes.

Eur J Clin Pharmacol ; 34 : — 9. Diabet Med ; 7 : — Effects of solid and liquid guar gum on plasma cholesterol and triglyceride concentrations in moderate hypercholesterolemia. Am J Cardiol ; 62 : 51 — 5. Guar gum and gemfibrozil—an effective combination in the treatment of hypercholesterolemia. Atherosclerosis ; 76 : 71 — 7. Metabolic studies on the hypolipidaemic effect of guar gum.

Atherosclerosis ; 81 : — Long term effects of guar gum on metabolic control, serum cholesterol and blood pressure levels in type 2 non-insulin-dependent diabetic patients with high blood pressure. Ann Clin Res ; 16 suppl : — Metabolic and nutritional effects of long-term use of guar gum in the treatment of noninsulin-dependent diabetes of poor metabolic control. Am J Clin Nutr ; 49 : — Diabetic control is improved by guar gum and wheat bran supplementation.

Diabet Med ; 3 : — 3. Guar gum in insulin-dependent diabetes: effects on glycemic control and serum lipoproteins. Am J Clin Nutr ; 56 : — Dietary fiber: hyperlipidemia, hypertension and coronary artery disease. Am J Gastroenterol ; 81 : — Federation of American Societies for Experimental Biology.

Physiological effects and health consequences of dietary fiber. The effects of dietary fiber feeding on cholesterol metabolism in rats.

J Nutr ; : — 5. Schneeman BO , Gallaher D. Effects of dietary fiber on digestive enzyme activity and bile acids in the small intestine. Proc Soc Exp Biol Med ; : — Schneeman BO. Dietary fiber and gastrointestinal function.

Nutr Rev ; 45 : — Satiation, satiety, and the action of fibre on food intake. Int J Obes ; 11 suppl : 9 — Dietary fiber and year mortality from coronary heart disease, cancer and all causes: the Zutphen Study. Diet and heart: a postscript. Dietary fiber and reduced ischemic heart disease mortality rates in men and women: a year prospective study.

Dietary fiber and coronary heart disease in middle-aged hypercholesterolemic men. Am J Prev Med ; 9 : — Vegetable, fruit, and cereal fiber intake and risk of coronary heart disease among men. JAMA : : — Lipid Research Clinics Program. Reduction in the incidence of coronary heart disease. See corresponding editorial on page 1. Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide.

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Volume Cholesterol-lowering effects of dietary fiber: a meta-analysis. Lisa Brown , Lisa Brown. Oxford Academic. Bernard Rosner. Walter W Willett. Frank M Sacks. Select Format Select format. Permissions Icon Permissions. Meta-analysis , humans , controlled trials , total cholesterol , low-density-lipoprotein cholesterol , LDL cholesterol , high-density-lipoprotein cholesterol , HDL cholesterol , triacylglycerols , dose response , fiber. Fiber source. Average dose of soluble fiber.

Average length of treatment. Type of control no. Subject type no. Mean age. Background diet no. Mean initial lipid concentration 2. Open in new tab.

TABLE 2 Net change in blood lipids in subjects consuming diets high in soluble fiber compared with low-fiber diets 1. Lipid measured and fiber source. Net change per gram soluble fiber 3.

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More on this topic Regulation of apolipoprotein B-containing lipoproteins by dietary soluble fiber in guinea pigs. Effects of glycemic load on metabolic risk markers in subjects at increased risk of developing metabolic syndrome. Three-week psyllium-husk supplementation: effect on plasma cholesterol concentrations, fecal steroid excretion, and carbohydrate absorption in men. Related articles in Google Scholar. Related articles in PubMed Acylated saponins and flavonoid glycosides from the fruits of Stewartia koreana.

Short-term ozone exposure and metabolic status in metabolically healthy obese and normal-weight young adults: A viewpoint of inflammatory pathways. High-density lipoproteins: A promising tool against cancer. Citing articles via Google Scholar. Reproducibility and validity of diet quality scores derived from food frequency questionnaires. Are you what you eat? Through the lens of prepregnancy plant-based diets and risk of gestational diabetes.

Sustainable food systems and nutrition in the 21 st century: a report from the 22 nd annual Harvard Nutrition Obesity Symposium. Male waist circumference in relation to semen quality and partner infertility treatment outcomes among couples undergoing infertility treatment with assisted reproductive technologies. Total 5. All fibers 9. When it comes to your heart health, it appears that only soluble fiber is beneficial in lowering your cholesterol. Soluble fiber lowers cholesterol by binding to it in the small intestine.

Once inside the small intestine, the fiber attaches to the cholesterol particles, preventing them from entering your bloodstream and traveling to other parts of the body. Soluble fiber appears to be only effective against your LDL cholesterol, so if you also need to lower your triglycerides, or boost your HDL, soluble fiber may not be able to help you with this since the effect can range from very slight to no benefit at all. Additionally, you should not solely rely on fiber to lower your cholesterol, since the effect is only slight.

In studies to date, LDL cholesterol can decrease by at most 18 percent by consuming roughly 30 grams of soluble fiber daily. The other type of fiber, insoluble fiber, is also in many healthy foods. While this type of fiber also appears to have many health benefits, it does not lower cholesterol levels. A variety of foods contain soluble fiber. By consuming the recommended amounts of fruits, vegetables, whole grains, and legumes in the Food Pyramid, you should be able to obtain the recommended amount of soluble fiber each day.

While fiber supplements can be used to fulfill this requirement, it is not recommended that you use them as a substitute for eating a healthy diet. Fruits and vegetables also contain important nutrients, such as vitamins, that cannot be obtained through a fiber supplement. Looking to start a diet to better manage your cholesterol? Changing lifelong eating habits can be scary at first, but our guide will make it easier.

Br J Nutr. The role of soluble fiber intake in patients under highly effective lipid-lowering therapy. One serving of a breakfast cereal with oatmeal or oat bran provides 3 to 4 grams of fiber. If you add fruit, such as a banana or berries, you'll get even more fiber.

Fatty fish has high levels of omega-3 fatty acids, which can reduce your triglycerides — a type of fat found in blood — as well as reduce your blood pressure and risk of developing blood clots.

In people who have already had heart attacks, omega-3 fatty acids may reduce the risk of sudden death. Omega-3 fatty acids don't affect LDL cholesterol levels. But because of those acids' other heart benefits, the American Heart Association recommends eating at least two servings of fish a week. Baking or grilling the fish avoids adding unhealthy fats. Omega-3 and fish oil supplements are available. Talk to your doctor before taking any supplements.

Almonds and other tree nuts can improve blood cholesterol. A recent study concluded that a diet supplemented with walnuts can lower the risk of heart complications in people with history of a heart attack. All nuts are high in calories, so a handful added to a salad or eaten as a snack will do. Avocados are a potent source of nutrients as well as monounsaturated fatty acids MUFAs.

Research suggests that adding an avocado a day to a heart-healthy diet can help improve LDL cholesterol levels in people who are overweight or obese. People tend to be most familiar with avocados in guacamole, which usually is eaten with high-fat corn chips.

Try adding avocado slices to salads and sandwiches or eating them as a side dish. Also try guacamole with raw cut vegetables, such as cucumber slices. Replacing saturated fats, such as those found in meats, with MUFAs are part of what makes the Mediterranean diet heart healthy. Try using olive oil in place of other fats in your diet. You can saute vegetables in olive oil, add it to a marinade or mix it with vinegar as a salad dressing.

You can also use olive oil as a substitute for butter when basting meat or as a dip for bread. Sterols and stanols are substances found in plants that help block the absorption of cholesterol.

Foods that have been fortified with sterols or stanols are available. Margarines and orange juice with added plant sterols can help reduce LDL cholesterol. Adding 2 grams of sterol to your diet every day can lower your LDL cholesterol by 5 to 15 percent. It's not clear whether food with plant sterols or stanols reduces your risk of heart attack or stroke — although experts assume that foods that reduce cholesterol do reduce the risk. Plant sterols or stanols don't appear to affect levels of triglycerides or of high-density lipoprotein HDL cholesterol, the "good" cholesterol.

Whey protein, which is found in dairy products, may account for many of the health benefits attributed to dairy. Studies have shown that whey protein given as a supplement lowers both LDL and total cholesterol as well as blood pressure. You can find whey protein powders in health food stores and some grocery stores. Getting the full benefit of these foods requires other changes to your diet and lifestyle.



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