The Importance of Fiber

February 11, 2018

The Importance of Fiber

Fiber tends to get a bit of a raw deal when it comes to its place on the pantheon of nutrients. Most people fall into the trap of thinking that the only purpose for fiber is maintaining regularity, but this is selling things short. Fiber can do a lot of important things for your body.

Two Types of Fiber
Dietary fiber, also known as roughage or bulk, is unique when it comes to how the body processes it. Unlike, fats, carbs or proteins, fiber passes through the digestive system relatively intact until it leaves the body. This plays a role in how it supports various health functions.

Not all fiber is alike, however, and different types have different properties. The two main categories are soluble fiber and insoluble fiber. Here’s a basic breakdown of the differences.

Soluble fiber: When combined with water, soluble fiber dissolves into a gel-like material. This helps it play an important role in overall digestive support.
Insoluble fiber: Insoluble fiber doesn’t dissolve in water, but it still helps your digestive function. This draws water into the stool, supporting regularity. Insoluble fiber is behind much of the common benefits that we think of when talking about fiber.(1)

When it comes to insoluble fiber vs. soluble fiber, the two aren’t in competition with each other. Most plant foods have both types to some degree, but some have more of one than the other. And just like fats and protein, you want to have as many diverse sources as possible. Enzymedica's Purify Fiber Drink includes 4 separate sources of fiber and a wide variety of organic juice extracts.

What Fiber Does for You
Fiber helps your regularity by drawing water into your intestines, but it can also help you in other ways. For example, some studies report that having a fiber-rich meal means that you may feel full earlier. This could be a potential asset when it comes to portion control, a major struggle for people trying to lose weight.(2) This isn’t the case for all fibers – which makes it all the more important to pursue a balanced mix of plant foods and grains.

There are other potential areas of health that fiber can support as well, but the exact nature of just how it works isn’t yet as clear. Here are some of these areas:

Supporting good bacteria: Perhaps you’ve heard of the probiotic movement. If not, here’s a brief explanation. Our body is filled with millions of tiny microorganisms, and keeping them healthy and balanced can be good for our health. Many probiotic supplements supply more of these “good bacteria,” but fiber helps in a different way. Remember that insoluble fiber doesn’t break down like proteins and fats do? This means that it passes through the large intestine, where probiotic bacteria are located. Dietary fiber acts as what is called a prebiotic, feeding the bacteria and supporting many health functions.(3)

Heart support: A major contributor to heart issues is high levels of blood LDL cholesterol. Several studies have shown that overall, a fiber-rich diet may contribute to lower levels of cholesterol in the blood. To be clear, this doesn’t mean that fiber is a replacement to a heart-healthy lifestyle. However, it may be a nice part of it.(4)

Blood sugar support: In the same vein as heart support, fiber-rich foods have a lower glycemic index. This means smaller spikes in blood sugar if you have carbohydrates that are also rich in fiber. Again, this isn’t a substitute for other forms of care, but it is a nice bonus on top of everything else you are getting from your fiber.(5)

Good Sources of Fiber
It’s clear that fiber is great for you, but most people aren’t getting enough, including over half of modern-day Americans. Government guidelines suggest that men should aim for 38 grams of fiber per day, while women should look to get 25 grams per day. Meeting this goal requires a large selection of plant foods. Here are a few top options:
  • Whole-grain products like breads and cereals
  • Fruits like pears and berries
  • Vegetables like broccoli, artichokes and kale
  • The legume family, especially beans
  • Nuts and seeds of all kinds
As mentioned before, different categories tend to have more types of fiber than others. For example, oats, carrots and apples are particularly good sources of soluble fiber. Then you have foods like wheat, green beans and potatoes that have more insoluble fiber. Some, like beans, are good sources of both. The good news is that you should already be eating plenty of fruits and vegetables as a foundation of a healthy diet. Think about mixing them up if you feel like your fiber is lacking.

On top of the great food options here, some foods have additional fiber added. This is common for items like granola bars or yogurt. This is handy if you want to keep up your fiber-rich diet, but need something more portable. Just be sure to read the labels before you buy.

Along with food sources of fiber, you can also use one of many different supplemental preparations. These enable you to get both dietary fiber and nutrients that complement their functions. A good example is Enzymedica’s Pomegranate Lemonade Fiber Drink+. This combines four different types of fiber with juice powders and extracts from pomegranate, beet, cucumber and watermelon.

1. Anderson JW, Baird P, Davis RH, et al. Health benefits of dietary fiber. Nutr Rev. 2009;67(4):188-205.
2. Turner ND, Lupton JR. Dietary fiber. Adv Nutr. 2011;2(2):151-2.
3. Macfarlane S, Macfarlane GT, Cummings JH. Review article: Prebiotics in the gastrointestinal tract. Aliment Pharmacol Ther. 2006;24(5):701-14
4. Pereira MA, O'reilly E, Augustsson K, et al. Dietary fiber and risk of coronary heart disease: A pooled analysis of cohort studies. Arch Intern Med. 2004;164(4):370-6.
5. Weickert MO, Pfeiffer AF. Metabolic effects of dietary fiber consumption and prevention of diabetes. J Nutr. 2008;138(3):439-42.

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