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Does Insoluble Fiber Lower Cholesterol

Where To Get It

How Much Soluble Fiber Per Day To Reduce Cholesterol & 12 Cholesterol Lowering Foods

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.

Two Types Of Fiber: Soluble & Insoluble

There are two types of fiber: soluble and 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. Once excreted, these are no longer available to build more cholesterol.

Our bodies build 80% of the cholesterol we contain, and fiber helps to remove too many building blocks. Then the cholesterol that does get made has to go do its jobs instead of hanging out in our bloodstream and getting deposited in our arteries. This reduces the risk of heart attack and stroke.

The average Americans fiber intake is less than 15 grams per day this is considered a low fiber diet and is only recommend to individuals who have specific gastrointestinal issues. Women need to aim for 25 grams of fiber per day, while men need 38 grams. Its important to increase fiber gradually and to drink plenty of water to avoid stomach troubles.

Soluble And Insoluble Fiber

  • Feeling satiated or full longer after meals: Soluble fiber slows down how quickly foods are digested, meaning most people feel full longer after fiber-rich meals. Insoluble fiber physically fills up space in the stomach and intestines, furthering the sensation of being full. These properties can help people manage their weight.
  • Helping lower disease risk: Due to fiberâs many health benefits, a high-fiber diet is associated with a lower risk of many diseases, including obesity, cardiovascular disease, diabetes, metabolic syndrome and others.

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How Much Fiber Do I Need Each Day

The American Heart Association Eating Plan suggests eating a variety of food fiber sources. Total dietary fiber intake should be 25 to 30 grams a day from food, not supplements. Currently, dietary fiber intakes among adults in the United States average about 15 grams a day. That’s about half the recommended amount.

Insoluble Fiber Vs Soluble Fiber

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What is the difference between soluble and insoluble fiber? And do you need soluble or insoluble fiber, or both?

Many foods contain both soluble and insoluble fiber, and both types of fiber are important parts of a healthy diet, since both have been shown to help with appetite control, weight management, digestion, bowel movements, cholesterol balance, and so on.

The job of soluble fiber is to create a gel in the digestive system. It helps to bind with fatty acids, which is beneficial for maintaining healthy cholesterol levels and heart health. Soluble fiber also prolongs stomach emptying, which improves absorption of nutrients, provides satiety after eating and controls hunger. Soluble fiber can also regulate blood sugar levels, helping to prevent spikes in blood sugar and risk for problems like insulin resistance or diabetes.

Soluble fiber is found in foods like beans, legumes, oats, barley, berries and some vegetables many of which also provide insoluble fiber.

Which is better for constipation, soluble or insoluble fiber?

Insoluble fiber is usually better for preventing constipation, although both types of fiber can be helpful for staying regular and free from digestive issues.

This is why a very high-fiber diet may sometimes make IBS symptoms worse, although it depends on the person. Because each person reacts to various fiber-containing foods differently, its important to increase these foods in the diet gradually and also to drink plenty of water.

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How To Read A Food Label

Food labels are standardized by the U.S. government’s National Labeling and Education Act . Nutrition labels and an ingredient list are required on most foods, so that you can make the best selection for a healthy lifestyle. Review the food label below. Determine the total amount of fiber in this product or ask your registered dietitian or healthcare provider to show you how to read food labels and apply the information to your personal needs. In order for a product to be labeled high fiber, it must contain 5 grams or more of dietary fiber per serving.

Last reviewed by a Cleveland Clinic medical professional on 04/15/2019.


The Benefits Of Fiber

It seems that your mom’s nagging you to eat your fruits and vegetables wasjustified. Getting your “roughage” is important. Roughage, what we now refer toas fiber, is the indigestible portion of food that travels through thedigestive system virtually intact. While dietary fiber has no nutritionalvalue, it can have a profound impact on health, including lowering the risk forcertain types of cancer, lowering blood cholesterol levels and minimizing thecomplications of diabetes. In addition, it may even aid appetite control.

Fiber can be classified into two categories–soluble and insoluble, dependingon its ability to bond with water molecules. The loosely knit chemical bonds offiber molecules allow them to pick up water molecules in the course of theirjourney through the digestive system. “Soluble” fiber molecules readily acceptand retain water, whereas “insoluble” fibers are more rigid and crystalline instructure and have few available bonds for water molecules.

Not only can fiber bond with water, but fiber molecules also bond withsubstances such as hormones, bile acids and potential carcinogens. Because ofthis, fiber plays an important role in preventing the following:

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What Should My Daily Fiber Goal Be If My Cholesterol Is On Target

If you do not have a high LDL level, then you don’t need to worry about a daily soluble fiber goal, though keep including whole-fiber sources in your diet. Simply follow the Institute of Medicine’s fiber guidelines for the general public: 14 grams of total fiber per 1,000 calories consumed or 25g/day for women and 38g/day for men. For more information: How much fiber do you need each day?

Proposed Health Benefits Of Dietary Fiber

How Fiber Lowers Cholesterol

Dietary fiber and whole grains are an abundant source of nutrients including vitamins, minerals, and a slowly digestible energy. In addition, they contain phytochemicals such as phenolics, carotenoids, lignans, beta-glucan and inulin. These chemicals, secreted by plants, are not currently classified as essential nutrients but may be important factors in human health . The synergistic effect of phytochemicals, increased nutrient content and digestive properties, are believed to be the mechanism behind dietary fibers beneficial effects on the treatment and prevention of obesity and diabetes , reduced CVD and decreased incidence of certain types of cancer . In the following subsections, potential health benefits of dietary fiber will be reviewed along with their possible mechanisms and modes of actions.

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Study Strenghts And Limitations

According to a recent meta-analysis of statin trials , lipid-lowering therapy that promotes greater reductions in LDL-cholesterol produces definite further reductions in the incidence of cardiovascular events. Therefore, our study tested the benefit of fiber intake in this scenario.

It is possible that the lipid effects of soluble fiber have been masked by the highly effective treatment used in our study. Furthermore, fiber effects on anthropometric parameters could be more pronounced in subjects with obesity and/or diabetes, and when fiber is consumed at longer periods.

World Health Organization And Food And Agriculture Organization

The World Health Organization and Food and Agriculture Organization agree with the American Association of Cereal Chemists definition but with a slight variation. They state that dietary fiber is a polysaccharide with ten or more monomeric units which is not hydrolyzed by endogenous hormones in the small intestine .

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How Fiber Helps Blood Sugar And Cholesterol

Every fiber helps blood sugar and cholesterol by slowing the breakdown and absorption of fat and sugar from your food and help stop spikes in blood fat and blood sugar that usually occurs after eating. They also stop the absorption of some cholesterol and fat, thereby lowering your cholesterol and triglyceride levels.

How Effective Is Soluble Fiber At Lowering Cholesterol

Fiber Lower Cholesterol

The 20202025 Dietary Guidelines for Americans advise that women should generally consume 2528 grams of fiber per day and men should aim for 3134 grams of fiber. Thats about 14 grams of fiber for every 1,000 calories consumed .

For most Americans, the range of 2535 grams of fiber per day would be considered increased consumption, with soluble fiber composing at least 6 grams of that amount .

Regular consumption of soluble fiber is associated with a 510% reduction in total cholesterol and LDL cholesterol levels .

But some food sources of soluble fiber may be more effective at lowering cholesterol than others. Read on to learn about some of these.


Soluble is effective at lowering total and LDL cholesterol levels by decreasing the synthesis of cholesterol in the body and by helping to increase excretion. Insoluble fiber does not have that same effect.

Here are 5 foods high in soluble fiber that may support healthy cholesterol levels.

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Effect Of Soluble Fiber

In the full dose range, soluble fiber significantly reduced both total and LDL cholesterol: 0.028 mmolL1g soluble fiber1 and 0.029 mmolL1g soluble fiber1 , respectively . High-fiber diets also significantly reduced HDL cholesterol, but by a much smaller amount: 0.002 mmolL1g soluble fiber1 . Soluble fiber intake did not significantly affect triacylglycerol concentrations: 0.001 mmolL1g soluble fiber1 . The tests for heterogeneity were highly significant , indicating that the lipid changes may have been better characterized by separate estimates for studies similar in design or subject characteristics such as type of soluble fiber.

Net change in blood lipids in subjects consuming diets high in soluble fiber compared with low-fiber diets

Lipid measured and fiber source . Full dose range . Practical dose range .
No. of studies .

Relation between dose of soluble fiber and mean lipid changes. For each study, the net change in total cholesterol and LDL cholesterol is plotted against the mean daily dose of soluble fiber. All models were weighted by using the inverse of the variance of each effect size and forcing the intercept through zero. Plots show an inverse association between dose of soluble fiber and mean changes in total and LDL cholesterol . Individual studies with low variance in the meta-analysis are denoted with circles around the point estimates.

Why Fiber Lowers Cholesterol

We all know that high levels of LDL cholesterol in our blood is a bad thing. But did you know that our bodies actually need cholesterol to function?

When we eat, the liver and gallbladder squeeze bile into the intestine to help digest food. It turns out that bile contains a lot of cholesterol. In fact, one of the ways our body uses LDL cholesterol is to make bile. Because our systems are very efficient, any leftover bile from the digestive process gets reabsorbed into the blood stream increasing our levels of LDL cholesterol.

That means a good way to lower LDL cholesterol levels in our blood is to prevent cholesterol in unused bile from being reabsorbed.

The original cholesterol-lowering medications worked by leveraging this internal cholesterol circulation. They were called bile acid resins or bile acid sequestrants and they trapped unused bile inside the gut so that you would eventually excrete it out. These resins worked pretty well, but were unpopular because they were messy to use, had to be taken with meals, and often caused intestinal upset. When statins came along, these medications all but disappeared from use.

To get the most out of this effect, you have to consume your fiber WITH food.

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What Are Some Guidelines To Increasing Dietary Fiber

This guide provides basic information to help you increase fiber in your diet. Fiber is an important dietary substance to your health. Most fiber-containing foods are also good sources of vitamins, minerals, and antioxidants, which offer many health benefits. A registered dietitian can provide in-depth nutrition education to help you develop a personal action plan.

How Much Fiber Should I Eat

How Does Fiber Lower Cholesterol? – by Dr Sam Robbins

The Academy of Nutrition and Dietetics recommends consuming about 25-35 grams of total fiber per day, with 10-15 grams from soluble fiber or 14g of fiber per 1,000 calories. This can be accomplished by choosing 6 ounces of grains , 2½ cups of vegetables, and 2 cups of fruit per day . However, as we age, fiber requirements decrease. For those over the age of 70, the recommendation for women is 21 grams and for men 30 grams of total fiber per day.

Note: Eating a high-fiber diet may interfere with the absorption and effectiveness of some medications. Speak to your doctor about which medications to take with caution and when to take them. Fiber also binds with certain nutrients and carries them out of the body. To avoid this, aim for the recommended 20-35 grams of fiber per day. When eating a high-fiber diet, be sure to drink at least eight glasses of fluid each day.

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Effect Of Initial Lipid Concentration

On the basis of weighted least-squares regression analyses, the initial total cholesterol concentration was not a significant predictor of lipid changes after adjustment for dose when entered into the models as either a continuous variable or a categorical variable . There was a greater decrease in LDL cholesterol in studies in which subjects had an average initial LDL-cholesterol concentration > 4.3 mmol/L compared with an average initial LDL-cholesterol concentration < 4.3 mmol/L . However, this difference was only marginally significant . Net lipid changes were not significantly related to initial concentrations for either HDL or triacylglycerols after adjustment for dose.

Consuming Good Carbs Means More Daily Fiber

Unfortunately, most of us are consuming fewer than 20 grams of fiber per day. I know many people who shy away from the carbs in whole grains, beans, and fruit, thus missing out on all that healthy fiber. But heres the deal: theres good carbs and bad carbs, and whole grains, beans, and vegetables are all good, folks. Its the quality of the carb that counts. Worried about gassy effects? In the short term, start low and use simethicone as needed. Your body will become accustomed over time, and the effects will diminish.

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Reduce Consumption Of Red Meat

LDL cholesterol is also known as the bad cholesterol because it collects in the walls of your blood vessels and is known to clog your arteries. An essential part of any low LDL cholesterol diet is to reduce the amount of meat you eat as it increases LDL cholesterol. Trendy and popular diets, such as the keto diet, encourage dieters to eat significantly high-fat meals that include red meat. However, adopting a diet that consumes high amounts of red meat and other animal products, has been linked to much higher cholesterol and a variety of other health problems so it is always important to consult your physician before adopting these kinds of diets.

Most animal products, such as turkey and pork, cause some increase in cholesterol. However, red meat has a significant impact on increasing cholesterol. While reducing your intake of beef and pork, try substituting for fish or poultry in your recipes. A simple swap like chicken fajitas instead of beef fajitas can have a big impact on your overall cholesterol.

Fiber Content Of Common Foods

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  • Serving Size: 3 1/2 inches
  • Total Fiber : 3
  • Serving Size: 1 1/4 cup
  • Total Fiber : 4
  • Serving Size: 1 cup cooked
  • Total Fiber : 4
    • Serving Size: 1/2 cup cooked
    • Total Fiber : 4
  • Serving Size: 1/2 cup cooked
  • Total Fiber : 3
  • Serving Size: 1/2 cup cooked
  • Total Fiber : 2
  • Serving Size: 1/2 cup cooked
  • Total Fiber : 6
  • Serving Size: 1/2 cup cooked
  • Total Fiber : 6
  • Serving Size: 1/2 cup cooked
  • Total Fiber : 4
  • Serving Size: 1/8 cup or 2 tbsp
  • Total Fiber : 4
  • Serving Size: 1/8 cup or 2 tbsp
  • Total Fiber : 10
  • Serving Size: 1/8 cup or 2 tbsp
  • Total Fiber : 2
  • Serving Size: 1 cup, fresh
  • Total Fiber : 2
  • Serving Size: 1/2 cup, cooked
  • Total Fiber : 2
  • Serving Size: 1/2 cup, cooked
  • Total Fiber : 1
  • Soluble Fiber : 1
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    What Other Things Does Fiber Do

    Research has shown that a diet rich in fiber is associated with many health benefits, including the following:

  • Lowers cholesterol: Soluble fiber has been shown to lower cholesterol by binding to bile and taking it out of the body. This may help reduce the risk of heart disease.
  • Better regulates blood sugar levels: A high-fiber meal slows down the digestion of food into the intestines, which may help to keep blood sugars from rising rapidly.
  • Weight control: A high-fiber diet may help keep you fuller longer, which prevents overeating and hunger between meals.
  • May prevent intestinal cancer: Insoluble fiber increases the bulk and speed of food moving through the intestinal tract, which reduces time for harmful substances to build up.
  • Constipation: Constipation can often be relieved by increasing the fiber or roughage in your diet. Fiber works to help regulate bowel movements by pulling water into the colon to produce softer, bulkier stools. This action helps to promote better regularity.
  • Cholesterol And Its Role In Our Bodily Functions

    What is cholesterol, and why can it be harmful?

    Cholesterol is a type of fat found throughout our bodies. You may think that all cholesterol is badânot true. Cholesterol plays a role in important bodily functions like stress responses, reproduction, nutrient absorption, and the protection of our cells. Cholesterol becomes problematic when excess cholesterol starts traveling through and sticking around in our blood. If too much of it builds up inside our arteries, the build-up of plaque increases the risk of heart attacks and strokes. In short, high cholesterol is a risk factor for developing coronary heart disease.

    How do cholesterol levels rise?

    Molecules known as lipoproteins carry cholesterol from the liver, where cholesterol is made, to the cells that need it to carry out critical bodily functions. These lipoproteins also carry cholesterol back to the liver to be eliminated from the body. Lipoproteins called low-density lipoproteins take cholesterol to the bodyâs cells, while high-density lipoproteins facilitate the removal of the cholesterol from the body. Because LDLs work to distribute cholesterol through the bloodstream, whereas HDLs work to rid the body of excess cholesterol, LDLs and HDLs are often referred to as âbadâ fats and âgoodâ fats, respectively. When people have âhigh cholesterol,â it means that they have elevated levels of LDLs, or âbad fatsâ in their blood.

    How can fiber combat high cholesterol?

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