Jun. 30, 2025
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Our gut is where the immune system gets its oomph, where the final products of digestion sit, and where water is absorbed into the body. About 400 different kinds of bacteria live there, most of them good, some not so much. Maintaining the balance of these bacteria is critical to staving off one or another pathology, including IBS/IBD, diverticular issues, and even polyposis. The bottom line is that no one should suffer colon disease, and fewer have to if healthy and appropriate bacteria levels are maintained.
The cells that line the colon walls are called colonocytes. These endothelial beauties are flat and constitute a layer that is only a single cell thick. They live shorter than a week and then are replaced by new ones. Because of this high turnover rate, there’s no need to do harsh cleanses, our bodies do the work for us!
All cells need a source of energy to do their work. Evidence is strong that the epithelial lining of the gut relies more on luminal energy supply than on vascular, meaning that energy comes from outside, not from the bloodstream, as most cells require. So, then, what is this energy supply? Short-chain fatty acids (SCFA’s) derived from the bacterial fermentation of resistant starch are the luminal substrates for colonocytes.
Short-chain fatty acids, or SCFAs, are metabolites created by the microorganisms in our gut. There are several kinds of these SCFAs, including acetate, butyrate, and propionate. They all serve an important purpose in the gut, but we’ll be focusing on butyrate today.
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Butyrate is a short-chain fatty acid produced by bacteria in the colon that’s essential for a healthy microbiome. In fact, appropriate levels of butyrate are key, not only to digestion, but to cellular and DNA health as well.*
Butyrate is a key SCFA that supports the colon and the gut lining. Butyrate in particular has been found to be a key factor in supporting a healthy inflammation response in the colon.[4]* On its own, it provides up to 90% of the energy required by the colonocytes, the cells of the colon!* It’s no wonder a deficiency can lead to degradation of the gut lining and subsequent illness. When we have enough butyrate, we have a stronger gut, stronger gut-associated lymphoid tissue (GALT), and a stronger immune response.* Butyrate also supports the mucosa that hydrates the gut lining, promotes cell differentiation, and inhibits enzymes that can interfere with DNA replication.*[5]
Butyric acid and butyrate can often be confused but are simply different forms of the same molecule. Butyric acid is the form that you’ll find in food and many supplements and is also called butanoic acid. It’s an SCFA with four carbon atoms at its heart and is found in butter (hence its name) and other dairy products. When butter goes rancid, (i.e. when your Romano cheese sits on the kitchen table for a few hours at ninety degrees), you can experience the unfortunate aroma of butyric acid — a sharp, fermented, rather unpleasant smell.
Butyric acid has a pH low enough to cause an upset stomach, but when compounded with an alkali, it becomes more than just an agreeable friend. When an acid is mixed with a base, the combination forms a salt plus water. At this stage, we no longer have butyric acid, but butyrate, a buffered form of butyric acid. The terms might be used interchangeably because they have some commonality, but they are not the same.
At this point, you may be wondering if you have low levels of butyrate, or how you would know if you did. We took this question to our resident expert, Dr. Tom, who let us know that the only way to truly know is by taking a stool test. But, he also mentioned that if you’re not getting adequate fiber from starchy foods in your diet, chances are good you could use some extra butyrate. As we know, the SAD (Standard American Diet) is full of processed foods that are devoid of fiber, and the 25-28 grams we need per day are generally lacking in many diets. In fact, 97% of Americans do not eat enough fiber!
Butyrate levels in the gut can be negatively affected by high-protein, high-fat, low-carb diets. Keto and Paleo diets that restrict carbohydrates and fiber lack the starch needed to make your own butyrate. Carnivore diets can skew SCFA production away from producing butyrate and see higher levels of propionate and acetate.
Another way to determine if you might be deficient in butyrate is to consider common symptoms of those who are. These symptoms take time to develop and can include:
Anyone who is experiencing digestive symptoms such as gas, bloating, constipation, diarrhea, and abdominal pain and discomfort may benefit from having more butyrate in their gut. However, every microbiome and body is unique, so you should consult with a trusted practitioner to determine what is right for you.
So now that we know the symptoms of low butyrate levels, what benefits does this nutrient actually provide? While there are many (including simply reducing the symptoms we mentioned above), there are three primary advantages that butyrate gives us.
Of the short-chain fatty acids and those having fewer than six carbon atoms, butyrate is the one that nourishes the gut and promotes cell differentiation, a process that helps to prevent serious colonic diseases.* Because of its protective nature, butyrate is a highly-desirable molecule and should be cultivated as a friend, or at least introduced as a partner.
The fiery process of inflammation is linked to most chronic disorders, from heart attack to stroke to type 2 diabetes. Inflammation fuels a cytokine known as interleukin-6 (IL-6), which remains elevated in chronic sickness. Butyrate is a rescue molecule in inflammatory diseases, wherein it impairs the oxidative processes that initiate their genesis.* By supporting a healthy inflammation response, butyrate may be helpful for many other autoimmune and inflammatory conditions.*
Butyrate inhibits enzymes that harm and unwind DNA, just like the kinked-up Slinky we ruined as kids. Butyrate sequesters harmful ammonia that forms from faulty protein metabolism and/or from inborn metabolic errors. In clearing mental fog, it increases brain-derived neurotrophic factors.* Depending on its concentration, butyrate decreases intestinal permeability, closing tight junctions and preventing leaky gut.* SCFAs in general, including butyrate, have also been shown to affect cholesterol metabolism and increase mineral absorption, which is highly beneficial for heart health and circulation health.*
Learn more about the benefits of butyrate here.
The good news is there appear to be very few side effects associated with supplementing butyrate. Our on-staff expert RD, Dr. Tom, says “All reports in the medical papers admit there are no known ill effects from butyrate taken at "normal" doses, which I have extrapolated to be less than 8.0 grams a day for several months. One study does state that more than 20.0 grams a day will waken latent herpes simplex (fever blisters). But that high a dose is not recommended.”
Dr. Tom also notes that, “colonocytes absorb butyrate supplements immediately and rapidly, with more than 95% precision and completeness. The remaining 5% goes to the toilet.” The FDA cites butyrate as Generally Recognized As Safe (GRAS).
Knowing that there are serious benefits to increasing your butyrate levels and not many negative side effects, how can you incorporate it into your everyday life? The two main ways to achieve this are by eating food with butyrate, or taking specialized butyrate supplements.
As we mentioned earlier, butyrate and SCFA production only come from the food we ingest and the microbial balance in the gut available to break down that food into SCFAs. Most of the foods that allow our microbiome to produce SCFAs are resistant starches, and some of them aren’t the most appetizing. But, when you’re dealing with severe digestive issues or autoimmune diseases, you may find them worth adding to your diet.
It is possible to get butyrate from the foods you consume, but in looking at the average diet, there are generally not enough slowly-digesting fibers to produce the necessary levels with food alone. That’s because a lot of the foods highest in resistant starch are not particularly appetizing, think cold mashed potatoes and white rice.
Foods that do help boost butyrate include:
For more information, check out our blog: What Foods Can Help Increase Your Butyrate Levels?
While many foods contain small amounts of butyrate-producing resistant starch, it’s still quite hard to reach the adequate amount. For this reason, ample supplementation with a butyrate supplement is vital to overall well-being.
In addition to adding butyrate-producing foods, you may also consider butyrate supplementation. Supplementing butyrate is a great way to keep your gut happy and healthy, but as always, quality matters! BodyBio Butyrate is formulated without extra additives or fillers to deliver the beneficial butyrate your gut craves without any junk. Because it’s fermented, butyrate is well known for its smell, but this is a natural byproduct of the fermentation process — don’t worry! This is exactly how it’s supposed to be.
Butyric acid on its own is quite acidic, so we pair it with different minerals to raise the pH and stabilize it for delivery to the gut. We have created Calcium Magnesium, Sodium, and Sodium Potassium Butyrate varieties depending on your needs. Due to widespread calcium and magnesium deficiency, we recommend most people start with our Calcium Magnesium Butyrate. Dozens of folks have reviewed our butyrate saying that it helped ease their digestive problems and get back to a healthy, balanced gut.
Interested in trying butyrate? Learn more here.
Sticking to a diet with high levels of butyrate can be difficult, so if you’re thinking that supplements are the better option for you, there are three general categories that products fall under. Below we discuss each in more depth, and help you make an informed decision on which is right for you.
BodyBio’s butyrates (we have three kinds!) are simply butyrate, a thirteen-atom complex joined to an alkali. Butyric acid, butyrate, and tributyrin are ingredients you may see in this category of supplements. While their names vary slightly, they all have the same purpose with different characteristics.
At BodyBio, the butyrate powder we use is covered with MCT from palm kernel oil. This is how it gets to the colon somewhat intact. If at least a little butyrate didn't get partially digested and enter the bloodstream through the walls of the small intestine, it wouldn't be able to act as an ammonia sequestrant, an HDAC inhibitor, a glucose modulator/appetite suppressant and support normal inflammation levels.*
Glycerol-bound butyrate is called tributyrin — 3 butyrates attached to a glycerol. Now, before we explain tributyrin any further, it helps to understand the concept of a prodrug. In this case, “pro” has nothing to do with for or against, but with precursor.
The term describes compounds that must undergo chemical changes within the body prior to exerting their pharmacological or therapeutic actions. One example is aspirin, which is the prodrug for salicylic acid. Aspirin, you see, is less corrosive to the pathways of the GI system. We may want the benefits of salicylic acid, but in order to get them internally, we take aspirin so that the body can convert it to salicylic acid without having to actually ingest such an acidic substance.
There are times, too, when prodrugs can sneak past pharmaceutical barriers by adjusting the delivery form. This is how tributyrin works as a stable and rapidly-absorbed prodrug of butyric acid, just like sodium butyrate, calcium-magnesium butyrate, or another form of the salt. The active portion of butyrate and tributyrin is butyric acid, which we can get by ingesting either form.
Contact us to discuss your requirements of butyric acid benefits. Our experienced sales team can help you identify the options that best suit your needs.
And yet — If tributyrin is butyric acid joined to a glycerol to make a compound of more than forty atoms, why not use the alkalized butyrate with a compound of fewer than twenty? This compound is much easier for the body to process and extract the benefit we want — the butyric acid.
A final option, liquid butyrate, is typically butyric acid bound to a fat like MCT oil. There are often many additives, flavorings, and sweeteners to hide the notably pungent smell of effective butyrate supplements. If you are going to go with a liquid butyrate supplement, we recommend checking your labels first.
We created BodyBio Butyrate supplements in three different types: Calcium Magnesium, Sodium, and Sodium Potassium. For most people, the Calcium Magnesium form will do just fine, but athletes or those who have low sodium levels may benefit more from the Sodium or Sodium Potassium forms. Whichever one you decide to try, you’ll get at least a 1,000 mg dose of butyric acid per two capsules.
In the early s Michel-Eugène Chevreul, a French organic chemist, first discovered butyric acid in its impure form while acidifying animal fat soaps. (Source)
Butyric acid, also known as butanoic acid, is a four-carbon short-chain fatty acid that is found in a number of foods and is also produced in our bodies. Its name comes from the ancient Greek word for butter.
Known as the “stinky fat,” butyric acid boasts an aromatic odor (to put it kindly) that has been described as both rancid butter and stale cheddar. It’s also responsible for the familiar lactic acid flavor that we often associate with fresh, homemade bread, butter, and yogurt.
Although butyric acid is naturally occurring in different types of dairy products, it's found in even greater amounts in the digestive tracts of humans and other mammals. The organic compound is produced when complex sugars are broken down during the process of fermentation. Its main function is to provide energy to cells of the colon, but it also supports the immune system with its powerful anti-inflammatory and antimicrobial properties.
In today's edition, we're exploring butyric acid, AKA the pungent, rancid odor that you might recognize from that time your butter went bad — and also a powerful healing nutrient in our bodies.
Butyric acid, also known as butanoic acid, is a short-chain, saturated fatty acid (SCFA) that is found in plant oils and animal fats, especially products such as butter, ghee, and raw milk. It’s also produced when carbohydrates like fiber are fermented by bacteria in the colon.
Butyric acid is the preferred fuel of your enterocytes, the cells that line the intestines. In other words, it's what your gut cells prefer to burn for energy. Estimates suggest that the compound provides your colon cells with about 70% of their energy needs. (Source)
Note: Although the terms “butyric acid” and “butyrate” are commonly used interchangeably even in the literature, scientifically speaking, the two compounds have slightly different structures (butyrate has one less proton than butyric acid). However, research appears to show that they have identical health benefits.
Butyric acid can also help support your immune function and keep your gut barrier healthy. It's known to have anti-inflammatory and anti-carcinogenic properties and to play a role in gut barrier function, immune system regulation, and metabolic regulation. (Source) That's why the compound has gained attention for its potential role in treating inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), and colorectal cancer. On the flip side, decreased butyrate concentrations and numbers of butyrate-producing bacteria have been linked with disorders, ranging from dysbiosis to strokes and even metabolic conditions. (Source, Source, Source, Source)
A diet high in fiber has long been considered a cornerstone of gut health, and now science is backing that up. Fiber promotes healthy intestinal flora and helps maintain healthy gut barrier function. It can also help reduce inflammation and insulin resistance, and may help reduce your risk of developing certain diseases, such as diabetes and heart disease.
As dietary fiber is fermented by bacteria in the gut, butyric acid is formed. Research suggests butyric acid in the gut helps kill colon cancer cells, making a high-fiber diet an important cancer prevention tool. (Source) Beyond that, butyrate can affect our brains by acting via the gut–brain axis. Through its ability to cross the blood–brain barrier, butyrate can activate the vagus nerve and hypothalamus, indirectly affecting appetite. (Source)
Thanks to its anti-inflammatory properties, butyrate can help control inflammation and modulate the immune response. In addition, butyric acid helps regulate the production and development of regulatory T cells in the colon, which are responsible for helping your body distinguish between itself and foreign invaders. Without the ability to tell self from nonself, the immune system may begin to attack your own tissues and organs, resulting in an autoimmune condition. (Source)
Related to immune function, butyrate also helps maintain healthy gut barrier function and prevent the incidence of leaky gut. (Source) Emerging evidence suggests there may be a link between butyrate and autoimmunity in humans as well. For example, people with type 1 diabetes — an autoimmune condition that affects the ability of the pancreas to produce insulin — have been found to have lower levels of butyrate-producing bacteria in their gut than those without diabetes. (Source)
Studies have revealed that butyric acid has a profound effect on the brain, ranging from memory and cognition issues to neurodegenerative diseases. In rat studies, butyrate stimulated the release of brain-derived neurotrophic factor (BDNF), a molecule that supports the growth and differentiation of healthy neurons in the brain. (Source) And in studies looking at animal models of Huntington’s disease and Parkinson’s disease, butyric acid has been shown to protect brain neurons from cell death and to extend the lifespan of mice with Huntington’s. (Source, Source)
Numerous studies have reported that butyrate metabolism is impaired in patients with IBD. (Source) Butyric acid has been shown to decrease colitis-associated intestinal inflammation and colon cancer in both animal and human models. In a small study looking at the effects of butyrate on Crohn’s disease, 69% of patients saw clinical improvements after treatment, with 53% of participants achieving remission. (Source)
Emerging evidence suggests that butyric acid may be a potential treatment option for IBS as well. (Source)
In one double-blind, randomized, placebo-controlled study, 66 adult patients with IBS took either a placebo or 300 milligrams of sodium butyrate (the sodium salt of butyric acid) per day, in addition to receiving standard therapy. Just four weeks into the 3-month study, researchers found that subjects who took the butyric acid had a statistically significant decrease in the frequency of abdominal pain during bowel movements. (Source)
One of the more controversial potential applications of butyric acid is its ability to impact insulin sensitivity and obesity. In many studies, butyrate has been shown to significantly improve insulin sensitivity and reduce insulin resistance in people with metabolic syndrome. (Source) Researchers believe that this may be a result of the compound's ability to increase GLP-1 (glucagon-like peptide-1) and PYY (peptide YY), hormones that help your body to control food intake and increase fat burning (Source, Source, Source).
However, although a large body of evidence has suggested that butyrate may attenuate obesity and insulin resistance, a few studies have shown the opposite effect. Therefore, more research is needed to understand the effects of butyrate on obesity.
Studies have shown that butyrate has multiple modes of action:
Butyrate is known to increase the expression of genes that promote the growth of gut cells and suppress genes that cause inflammation. It appears to do this by inhibiting histone deacetylase (HDAC), an enzyme that regulates gene expression. This protects the DNA wrapped around proteins called histones, which has led researchers to believe that butyrate has anti-inflammatory and anticancer effects in the gut. In other words, it prevents genes from getting damaged, rather helping them to survive and adapt. (Source)
As mentioned, butyric acid plays a key role in metabolism and mitochondrial activity. Not only does it serve as the primary source of fuel for colon cells, studies have also shown its ability to support energy homeostasis and promote mitochondrial activity in animal models. (Source) Researchers have also postulated that reduced glucose availability in the brain may contribute to mitochondrial dysfunction in acute and chronic neurological diseases, which could theoretically be supported via butyrate because of its effects on energy metabolism. (Source)
Research has shown that butyrate is a key regulator of microbiome health and helps to strengthen the gut barrier. As a major energy source for the cells that line the colon, butyrate is preferentially absorbed to repair damaged cells and support the growth of new ones. In effect, it also keeps harmful bacteria and endotoxins from passing through the intestinal wall into the bloodstream, which can help reduce inflammation and the risk for chronic disease. (Source)
G-protein-coupled receptors (GPCRs) are members of a large protein family that are activated by a variety of neurotransmitters, hormones, and drugs. GPCRs are involved in many important physiological functions, such as the regulation of cell growth and proliferation, hormone secretion, and neurotransmitter release.
They are a common target in medications, but interestingly butyrate has been found to signal through a GPCR receptor called GPR109a. Scientists believe that butyrate's triggering of GPR109a may be responsible for the compound’s anti-inflammatory and anti-carcinogenic effects. (Source)
Some of the food sources with the most naturally-occurring butyric acid include butter, ghee, parmesan cheese, and raw milk. (Source) Butter contains 3% to 4% butyric acid, making it the richest dietary source of butyrate. (Source) Some types of kombucha can also contain butyric acid as well. However, even the richest food sources contain relatively little of this fatty acid compared to the amount that can be created in the large intestine, so your best bet is to feed fiber to the microbes that generate butyrate in your gut.
Fructo-oligosaccharides (FOS) are a type of prebiotic, substances that promote the growth of beneficial bacteria in the colon, such as butyric acid. Other prebiotic superstars to consider incorporating into your diet include garlic, bananas, onions, leeks, and asparagus. One study in rats showed a high-FOS diet increased levels of butyrate in the large intestine while maintaining the levels of anaerobic bacteria. (Source)
Resistant starches are gut-friendly carbohydrates that feed the beneficial bacteria in your gut and help them thrive. As a bonus, they also increase butyrate production in the large intestine as they are fermented by other bacteria in the gut. The best way to get more butyrate is to eat prebiotic foods that are rich in resistant starch, such as artichokes, plantains, and cooked potatoes. (Source)
Although diet is typically the best way to increase butyrate production in the gut, if resistant starch isn't a staple in your diet you can also supplement with butyrate directly. It’s commonly found in fiber supplements and often sold as sodium butyrate. However, you may want to hold off if you’re pregnant or breastfeeding — one animal study found that giving pregnant and breastfeeding rats sodium butyrate led to insulin resistance and increased fat storage in their offspring. (Source)
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