Dietary fiber is the carbohydrate in plants that your body cannot digest.
Though it’s essential to your gut and overall health, most people don’t reach the recommended daily amounts (RDA) of 25 and 38 grams for women and men, respectively
Both soluble and insoluble fiber help bulk up your stools and can be used as a food source for good bacteria in your large intestine.
Soluble fiber draws water into your gut, which softens your stools and supports regular bowel movements.
It not only helps you feel fuller and reduces constipation but may also lower your cholesterol and blood sugar levels
Here are 20 healthy foods that are high in soluble fiber.
Black beans are not only a great way to give your dishes a meaty texture but also an amazing source of fiber.
One cup (172 grams) packs 15 grams, which is about what an average person consumes per day, or 40–60% of the RDA for adults
Black beans contain pectin, a form of soluble fiber that becomes gummy-like in water. This can delay stomach emptying and make you feel fuller longer, giving your body more time to absorb nutrients
Black beans are also rich in protein and iron, low in calories, and almost fat-free
Soluble fiber content: 5.4 grams per three-quarter cup (129 grams) of cooked black beans
2. Lima beans
Lima beans, also known as butter beans, are large, flat, greenish-white beans.
They mainly contain carbs and protein, as well as a little fat.
They’re lower in total dietary fiber than black beans, but their soluble fiber content is almost identical. Lima beans also contain the soluble fiber pectin, which is associated with reduced blood sugar spikes after meals
Raw lima beans are toxic when raw and should be soaked and boiled before you eat them
Soluble fiber content: 5.3 grams per three-quarter cup (128 grams) of lima beans
3. Brussels sprouts
The world may be divided into Brussels sprout lovers and haters, but whatever side you’re on, it’s undeniable that this vegetable is packed with vitamins and minerals, along with various cancer-fighting agents.
What’s more, Brussels sprouts are a great source of fiber, with 4 grams per cup (156 grams).
The soluble fiber in Brussels sprouts can be used to feed beneficial gut bacteria. These produce vitamin K and B vitamins, along with short-chain fatty acids that support your gut lining.
Soluble fiber content: 2 grams per one-half cup (78 grams) of Brussels sprouts
4. Avocados
Avocados originate from Mexico but have gained popularity worldwide.
Haas avocados are the most common type. They’re an excellent source of monounsaturated fats, potassium, vitamin E, and dietary fiber.
One avocado packs 13.5 grams of dietary fiber. However, one serving — or one-third of the fruit — provides about 4.5 grams, 1.4 of which are soluble
Rich in both soluble and insoluble fiber, avocados really stand out in this regard.
Compared with other popular fiber sources, they contain lower amounts of the antinutrients phytate and oxalate, which can reduce mineral absorption
Soluble fiber content: 2.1 grams per one-half avocado
5. Sweet potatoes
Sweet potatoes are high in potassium, beta carotene, B vitamins, and fiber. Just one medium-sized sweet potato packs over 400% of the Reference Daily Intake (RDI) of vitamin A
What’s more, the average potato contains about 4 grams of fiber, almost half of which is soluble
Therefore, sweet potatoes can contribute significantly to your total soluble fiber intake.
Soluble fiber may be important for weight management. The more of it you eat, the greater the release of gut-satiety hormones, which may help reduce your overall appetite
Soluble fiber content: 1.8 grams per one-half cup (150 grams) of cooked sweet potato
6. Broccoli
Broccoli is a cruciferous vegetable that grows well in cool seasons. It’s usually dark green, but you can also find purple varieties.
It’s high in vitamin K, which helps your blood clot, and is a good source of folate, potassium, and vitamin C. It also has antioxidant and anticancer properties
Broccoli is a good source of dietary fiber, with 2.6 grams per 3.5 ounces (100 grams), more than half of which is soluble (14).
The high amount of soluble fiber in broccoli can support your gut health by feeding the good bacteria in your large intestine. These bacteria produce beneficial short-chain fatty acids, such as butyrate and acetate.
Soluble fiber content: 1.5 grams per one-half cup (92 grams) of cooked broccoli
7. Turnips
Turnips are root vegetables. Larger varieties are usually fed to livestock, but the smaller types are a great addition to your diet.
The most abundant nutrient in turnips is potassium, followed by calcium and vitamins C and K
They’re also great for upping your fiber intake — 1 cup packs 5 grams of fiber, 3.4 of which are soluble (6, 16).
Soluble fiber content: 1.7 grams per one-half cup (82 grams) of cooked turnips
8. Pears
Pears are crisp and refreshing and serve as a decent source of vitamin C, potassium, and various antioxidants
What’s more, they’re an excellent source of fiber, with 5.5 grams in one medium-sized fruit. Soluble fiber contributes 29% of the total dietary fiber content of pears, the main form being pectin
Due to their high fructose and sorbitol contents, pears can sometimes have a laxative effect. If you suffer from irritable bowel syndrome (IBS), you may need to moderate your intake
Soluble fiber content: 1.5 grams per medium-sized pear
9. Kidney beans
Their characteristic shape gave kidney beans their name.
They’re a key ingredient in chili con carne and great source of dietary fiber, complex carbs, and protein. They’re also almost fat-free and contain some calcium and iron
Kidney beans are a good source of soluble fiber, particularly pectin.
However, some people find beans hard to digest. If that’s the case for you, start increasing your kidney bean intake slowly to avoid bloating.
Soluble fiber content: 3 grams per three-quarter cup (133 grams) of cooked beans
10. Figs
Figs were one of the first cultivated plants in human history.
They’re highly nutritious, containing calcium, magnesium, potassium, B vitamins, and other nutrients.
Both dried and fresh figs are great sources of soluble fiber, which slows the movement of food through your intestines, allowing more time for nutrient absorption
Based on anecdotal evidence, dried figs have been used as a home remedy to relieve constipation for years. While one study found that fig paste improved bowel movements in constipated dogs, human-based research is lacking
Soluble fiber content: 1.9 grams per one-fourth cup (37 grams) of dried figs
11. Nectarines
Nectarines are stone fruits that grow in warm, temperate regions. They’re similar to peaches, but don’t have the same characteristic fuzzy skin.
They’re a good source of B vitamins, potassium, and vitamin E. What’s more, they contain various substances with antioxidant properties
One medium-sized nectarine has 2.4 grams of fiber, more than half of which is soluble
Soluble fiber content: 1.4 grams per medium-sized nectarine
12. Apricots
Apricots are small, sweet fruits that range in color from yellow to orange, with the occasional red tinge.
They’re low in calories and a good source of vitamins A and C
Three apricots provide 2.1 grams of fiber, the majority of which is soluble
In Asia, apricots have been used in folk medicine for years, and it’s believed that they can protect people from heart disease
They may also aid digestion. One study found that mice eating fiber from apricots had higher stool weights than those who received insoluble fiber alone
Soluble fiber content: 1.4 grams per 3 apricots
13. Carrots
Carrots are one of the most popular and tasty vegetables on Earth.
Boiled or steamed, carrots are a key ingredient in many recipes, but they can also be grated into salads or used to make desserts like carrot cake.
With good reason, you may have been told as a child to eat carrots to help you see in the dark.
Carrots are packed with beta carotene, some of which is converted into vitamin A. This vitamin supports your eyes and is particularly important for night vision
One cup (128 grams) of chopped carrots contains 4.6 grams of dietary fiber, 2.4 of which are soluble
Since many people enjoy this vegetable daily, it can be a key source of soluble fiber.
Soluble fiber content: 2.4 grams per cup (128 grams) of cooked carrots
14. Apples
Apples are one of the most commonly eaten fruits in the world. Most varieties are quite sweet, but others like Granny Smith can be very sour.
“An apple a day keeps the doctor away” is an old proverb that may have some truth, as eating this fruit is associated with a lower risk of many chronic diseases
Apples pack various vitamins and minerals and are a good source of the soluble fiber pectin. Apple pectin may have many health benefits, such as a reduced risk of heart disease and improved gut function (29Trusted Source, 30Trusted Source).
Soluble fiber content: 1 gram per medium-sized apple
15. Guavas
Guavas are a tropical fruit native to Mexico and Central and South America. Their skin is typically green, while the pulp can range from off-white to deep-pink.
One guava packs 3 grams of dietary fiber, about 30% of which is soluble (6, 31).
This fruit has been shown to reduce blood sugar, as well as total cholesterol, triglycerides, and LDL (bad) cholesterol levels in healthy people. In part, this may be due to the soluble fiber pectin, which can delay the absorption of sugar
Soluble fiber content: 1.1 grams per raw guava fruit
16. Flax seeds
Flax seeds, also known as linseeds, are tiny brown, yellow, or golden seeds.
They pack a nutritious punch and can be a great way to improve the nutrient content of your smoothies, breads, or cereals.
Sprinkling 1 tablespoon of ground flax seeds over your porridge can add an extra 3.5 grams of fiber and 2 grams of protein to your breakfast. They’re also one of the best plant-based sources of omega-3 fats.
If possible, soak ground flax seeds overnight, as this allows their soluble fiber to combine with water to form a gel, which may aid digestion.
Soluble fiber content: 0.6–1.2 grams per tablespoon (14 grams) of whole flax seeds
17. Sunflower seeds
Sunflower seeds are a great nutritious snack and often purchased already shelled to reveal the tasty sunflower heart.
They contain about 3 grams of dietary fiber per one-fourth cup, 1 gram of which is soluble. What’s more, they’re rich in monounsaturated and polyunsaturated fats, protein, magnesium, selenium, and iron (6, 34).
Soluble fiber content: 1 gram per one-fourth cup (35 grams) of sunflower seeds
18. Hazelnuts
Hazelnuts are a delicious type of nut that can be eaten raw or roasted for a stronger flavor. They’re also often used as an ingredient in chocolate bars and spreads.
One-fourth cup of hazelnuts packs about 3.3 grams of dietary fiber, one-third of which is soluble. Additionally, they’re rich in unsaturated fats, vitamin E, thiamine, and iron (6, 35).
Partly due to their soluble fiber content, hazelnuts may help reduce your risk of heart disease by lowering LDL (bad) cholesterol (36Trusted Source).
Soluble fiber content: 1.1 grams per one-fourth cup (34 grams) of hazelnuts
19. Oats
Oats are one of the most versatile and healthy grains around. You can use them to make breakfast cereals, breads, scones, flapjacks, or fruit crumbles.
They contain beta glucan, a form of soluble fiber that’s associated with reduced LDL (bad) cholesterol and improved blood sugar control. It’s estimated that 3 grams of oat beta glucan per day can reduce your risk of heart disease
About 1.25 cups (100 grams) of dry oats contain 10 grams of total dietary fiber. This is divided into 5.8 grams of insoluble and 4.2 grams of soluble fiber, 3.6 of which are beta glucan
Beta glucan is also what gives porridge its characteristic creamy texture.
Soluble fiber content: 1.9 grams per cup (233 grams) of cooked oats
20. Barley
Some people may associate barley with the brewing industry, but this nutritious ancient grain is also often used to thicken soups, stews, or risottos.
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