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Home arrow Health arrow Gut Health arrow How Much Fiber Should You Have a Day for Optimal Health?

How Much Fiber Should You Have a Day for Optimal Health?

Written by Edibel Quintero, RD
Dr. Donika Vata
Fact checked by Donika Vata, MD
Last update: October 2, 2023
6 min read 526 Views 0 Comments
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Craving gut health? Find your fiber sweet spot.

how much fiber should you have a day

Dietary fiber is best known for its role in supporting digestive health. However, its health benefits extend far beyond that, as it can also improve heart health, regulate blood sugar levels, and promote healthy weight.

As a result, incorporating high-fiber foods into your daily diet is becoming increasingly important.

Wondering about the ideal daily fiber quota? Let’s delve into that.

How Much Fiber Do I Need Every Day?

Although there is no single standard, the FDA recommends adults consume 28 grams of fiber daily. In contrast, the USDA suggests that women consume 25g of fiber daily while men should consume 38g.

However, studies show that only 5% of US residents consume that much fiber a day. Among Americans, the average fiber intake is merely 16 grams per day.

Here’s a detailed breakdown of dietary reference intake of fiber, categorized by age and gender, as per the US IOM (Institute of Medicine).

GenderAgeDietary Reference Intakes (Grams of Fiber)
Female51 and above21
Male51 and above30

What Is Fiber?

Fiber or roughage is a non-digestible type of carbohydrate that can help you improve your gut health. While your body can’t absorb or digest fiber, it regulates your bowel movements, thickens the stool, and makes it easier to pass.

It’s found exclusively in plants, such as vegetables, fruits, whole grains, seeds, and nuts. It’s further broken down into two categories, including soluble fiber and insoluble fiber.

  • Soluble fiber: As the name implies, soluble fiber dissolves in water during digestion to form a gel, which increases stool bulk. The most common sources of soluble fiber include pears, turnips, broccoli, sweet potatoes, avocados, Brussels sprouts, lima beans, and black beans.
  • Insoluble fiber: This type of fiber doesn’t dissolve in water and moves through your gastrointestinal tract intact. It’s commonly found in potatoes, green beans, cauliflower, wheat bran, whole-wheat flour, and some whole-grain varieties.

4 Benefits of Proper Fiber Intake

Let’s spotlight the pivotal health perks linked to adequate fiber consumption:

#1 Improved digestion

Both soluble and insoluble types of fiber are beneficial for your digestive system. Soluble fiber turns into a gel-like substance in your stomach that increases the size and weight of your stool, which makes it easier to pass and prevents the risk of constipation.

#2 Weight management

Fiber is not directly fat-burning, but it may promote satiety, which can help you manage your weight in the long term.

When you consume foods rich in fiber, they keep you full for longer, curbing your appetite and reducing the likelihood of overeating. That’s why increased fiber consumption is linked with lower body weight.

#3 Boosts heart health

Recent studies show that consuming dietary fiber can reduce the risk of heart disease by influencing two key factors: total cholesterol levels and blood pressure.

Foods that contain soluble fiber, such as oats and fruits, can reduce cholesterol absorption into the bloodstream. It can lead to lower levels of LDL, the bad cholesterol type associated with heart disease.

Additionally, a diet rich in fiber, particularly from fruits, vegetables, and whole grains, can also improve blood pressure, which is beneficial for heart health.

#4 Supports blood sugar regulation

Dietary fiber, particularly soluble fiber, plays a crucial role in managing blood sugar levels. It’s essential for individuals with diabetes and those at risk of developing it.

When you consume foods rich in soluble fiber, it slows down the digestion and absorption of carbohydrates. It leads to a gradual release of glucose into your bloodstream, which prevents rapid spikes in blood sugar levels.

Additionally, foods rich in fiber can also improve insulin sensitivity, which allows the body to use insulin more effectively and regulate blood sugar.

How to Get More Fiber in 4 Easy Steps

If you’re keen on ramping up your fiber intake, these strategies might be just the ticket:

#1 Choose whole grains

Opting for whole grains is a simple yet effective way to increase your daily fiber intake. Unlike refined grains, which have had the bran and germ removed during processing, whole grains retain these rich fiber sources.

Whole grain fiber content, 100g

  • Barley (17g)
  • Oats (10.6g)
  • Buckwheat (5.8g)
  • Quinoa (3.8g)
  • Brown rice (3g)

#2 Consider fiber supplements

While the best way to get fiber is through your diet, fiber supplements can still be a helpful addition. It’s especially true if you find it difficult to meet your daily fiber goals through food.

Fiber supplements are available in different forms, including pills, capsules, powders, and gummies, and the most common types include psyllium husk, methylcellulose, and glucomannan.

#3 Eat more fruits and veggies

Increasing your intake of fruits and vegetables is another excellent way to boost your fiber consumption. These foods are not only rich in fiber but also packed with essential vitamins, minerals, and antioxidants.

Here’s a list of the fiber-rich fruits and veggies to eat.

Fruit fiber content,100g

  • Raspberry (7g)
  • Avocado (6.7g)
  • Kiwi (3g)
  • Apple (2.4g)
  • Bananas (2.6g)
  • Strawberry (2g)

Vegetable fiber content, 100g

  • Artichokes (5g)
  • Kale (4.1g)
  • Brussels sprouts (3.8g)
  • Eggplant (3g)
  • Beetroot (2.8g)
  • Carrots (2.8g)
  • Broccoli (2.6g)
  • Cauliflower (2g)

We recommend you include a variety of colorful fruits and vegetables in your daily meals and snacks to increase your overall fiber consumption.

#4 Opt for fiber-rich snacks

If you like snacking, you can use it as an opportunity to sneak in extra fiber throughout the day. Instead of choosing unhealthy snacks that are also low in fiber, such as candies, donuts, or chips, you can choose fiber-rich options.

Consider snacking on fresh fruits like apple slices with almond butter or a handful of berries. You can also go with whole-wheat bread with peanut butter or hummus, nuts, or seeds.

Greek yogurt with fruit and granola can also be a satisfying, fiber-rich snack. Making these simple substitutions in your snack choices can go a long way toward meeting your daily fiber goals.

What to Know Before Increasing Your Fiber Intake

Here’s what you should know before increasing your daily intake of fiber:

  • Gradual increase: It’s essential to increase your fiber consumption gradually because a sudden jump can lead to bloating and abdominal cramping. Start by adding small portions of high-fiber foods to your diet and increase them over several days or weeks.
  • Hydration: As mentioned above, fiber absorbs water, which can cause dehydration if you fail to drink plenty of water. Therefore, it’s important to stay hydrated by increasing your water intake when consuming more fiber.
  • Allergies and sensitivities: Be aware of any food allergies or sensitivities you may have when increasing fiber. Some high-fiber foods, such as wheat or nuts, can trigger allergic reactions in sensitive individuals.

A Word From Our MD

Expert image border HR_author_photo_Rosmy
Rosmy Barrios, MD
Medical advisor for Health Reporter

Incorporating fiber into your daily diet is a straightforward process that can yield significant health benefits.

The key is to diversify your food choices, which means you should include a variety of fiber-rich foods in your meals to ensure you’re getting both soluble and insoluble types.

Increasing your fiber intake supports your overall digestive health and can prevent metabolic diseases. Additionally, it can also be beneficial for managing weight, preventing the risk of heart disease, and regulating blood sugar levels.

However, increasing your fiber consumption drastically can cause uncomfortable gastrointestinal effects, such as bloated stomach, intestinal gas, and abdominal pain. Therefore, it’s advisable to increase your fiber intake gradually.

Lastly, make sure that you talk to your doctor before changing your diet, especially if you’re suffering from a medical condition.


Does salad have fiber?

Salads contain fiber, especially those made with leafy greens, various vegetables, beans, and whole grains. The fiber content, however, varies depending on the ingredients used in the salad.

How much fiber should a woman have a day?

According to the FDA, all adults should consume 28 grams of fiber daily, and the USDA recommends 25 grams of fiber daily for women. Therefore, a woman should aim to consume at least 25 grams of fiber daily.

How much fiber should a man have a day?

The recommendations for men regarding daily fiber value also vary. The FDA recommends 28g, but the USDA suggests 38g of fiber per day. So, as a man, you should aim for around 30g of daily fiber consumption.

What’s the best way to add fiber to your diet?

Incorporate whole grains like buckwheat, barley, and quinoa. Fresh fruits and vegetables, along with legumes like beans and lentils, should also be eaten more often.


Adding fiber to your diet is essential. In addition to improving your digestive health, this carbohydrate can also provide many other health benefits.

The best way to increase your daily fiber intake is to add whole foods to your diet, including fruits, vegetables, seeds, grains, and nuts. However, if you find it challenging to consume the daily suggested fiber amount, you can use fiber supplements as well.

Before adding a dietary supplement to your routine (or making any significant changes to your diet), be sure to talk to your healthcare provider. That’s because they know your medical history and can guide you in the right direction to meet your specific needs.

Written by Edibel Quintero, RD
Edibel Quintero is a medical doctor who graduated in 2013 from the University of Zulia and has been working in her profession since then. She specializes in obesity and nutrition, physical rehabilitation, sports massage and post-operative rehabilitation. Edibel’s goal is to help people live healthier lives by educating them about food, exercise, mental wellness and other lifestyle choices that can improve their quality of life.
The article was fact checked by Donika Vata, MD
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