“MCTs” are medium-chain triglycerides, a form of saturated fatty acid that has numerous health benefits, ranging from improved cognitive function to better weight management. Coconut oil is one great source of MCTs — roughly 62 percent to 65 percent of the fatty acids in coconut oil are MCTs — but recently more concentrated “MCT oil” has also been growing in popularity.
MCTs, also called “MCFAs” for medium-chain fatty acids, are believed to be largely missing from the diets of people eating “standard Western” diets, most likely because the public has been led to believe that all forms of saturated fats are potentially harmful. However, recent research has shown a lot of evidence about the real truth regarding saturated fats.
We now know that ideally MCT oils like coconut oil should actually be consumed every day. Certain saturated fats, especially MCTs and other healthy fats found in things like coconut oil or grass-fed beef, are in fact easier to digest than long-chain triglycerides (LCTs) and might even have more benefits related to heart health, obesity prevention and brain health, too.
In fact, traditional populations living in tropical areas have been consuming saturated fats, including sources of MCTs like coconuts, for thousands of years without any ill effects — so consider the idea that a low-fat diet is “healthy” to be one of the biggest nutrition lies there ever was!
Aside from coconut oil, smaller amounts of MCTs can also be found in certain other foods with saturated fats, including butter (especially butter from grass-fed cows), cheeses, palm oil, whole milk and full-fat yogurt.
Caution: Palm oil is a controversial source of MCTs, not because it’s bad for your body, but because there are major issues involved in the process of procuring this oil. These include deforestation, loss of wildlife diversity and unethical treatment of workers. That’s why I only recommend RSPO-certified palm oil, which comes from producers who prioritize sustainability practices.
What Is MCT Oil?
MCTs get their name because of the length of their chemical structure. All types of fatty acids are made up of strings of connected carbon and hydrogen. Fats are categorized by how many carbons they have: short-chain fats (like butyric acid) have fewer than six carbons, medium-chain fats have between six to 12 carbons and long-chain fats (like omega-3s) have between 13–21.
What makes MCTs a top source of essential healthy fats? Medium-chain fats are digested easily and sent directly to your liver, where they have a thermogenic effect and the ability to positively alter your metabolism. This is one reason why many people claim that MCTs, including coconut oil, are burned by the body for energy, or “fuel,” instead of being stored as fat.
Compared to longer-chain fats, MCTs are absorbed more easily since there’s less work for the body to do breaking apart carbon bonds. MCTs are smaller, so they can permeate our cell membranes more easily and don’t require that we use special enzymes in order for our bodies to utilize them.
MCTs and saturated fats are good for you in other ways, too: They reduce the risks of low-fat diets, and they’re supportive of your gut environment, especially since they have the capability to combat harmful bacteria, viruses, fungi and parasites.
Additionally, MCTs contain antioxidant properties, which is why coconut oil has far-reaching inflammatory benefits that have led it to be used to treat dozens of health problems in folk medicine for centuries.
6 Health Benefits
1. Can Help with Weight Loss or Maintenance
Compared to other types of oils and fats, MCTs seem to have positive effects on fat burning and weight reduction. As part of a healthy diet, MCT oil can help increase satiety and even raise the metabolic rate at which the body functions. Does this mean eating large amounts of MCTs daily will make you drop pounds? Not quite. Not every study has shown that MCTs can produce weight loss necessarily, but some definitely have shown the positive effects of MCTs on metabolic function.
For example, a 2003 study published in the Journal of Obesity and Related Metabolic Disorders showed that after comparing long-term consumption of MCTs and LCTs on energy expenditure, body composition and fat oxidation in obese women, the MCTs had more significant effects. Substitution of MCTs for LCTs in a targeted energy balance diet proved to offer better prevention of long-term weight gain due to increases in energy expenditure and fat-burning. (2)
Another 2001 study published in the Journal of Nutrition compared body weight and body fat in groups of adults either consuming long-chain fats or medium-chain fats over a 12-week period. The energy, fat, protein and carbohydrate intakes did not differ significantly between the groups, only the types of fats they were receiving.
After 12 weeks, the decrease in body weight and body fat was significantly greater in the MCT group than in the LCT group. The decrease in the area of subcutaneous fat in the MCT group was also significantly greater than that in the LCT group, which suggests that the MCT diet might be able to help reduce body weight and fat in individuals who need to lose weight. (3)
How do MCTs help with weight loss? Experimental studies demonstrate that dietary MCTs suppress fat deposition through enhanced thermogenesis and fat oxidation in both animals and humans. (4) In other words, it’s believed that they help the body produce ketones, which gives you the same benefits as the ketogenic diet without needing to cut carbs to drastically low levels.
In fact, MCTs are sometimes called “the ultimate ketogenic fats” because of their heating effect in the body and ability to rapidly be used for energy, especially when someone is not eating a lot of carbohydrates, making them perfect for the keto diet to help the body reach ketosis — along with one of the best things to consume on the Paleo diet.
2. Helps Protect Heart Health
A 2010 study published in the Journal of Neutraceuticals and Functional Foods reported that MCTs can help prevent the development of metabolic syndrome — a term given to a cluster of metabolic disorders, such as abdominal obesity, dyslipidemia, hypertension and impaired fasting glucose levels.
MCTs seem to be able to help decrease cardiovascular disease and mortality risk in general due to helping lower odds of becoming obese. Most likely, they have this positive effect because they are anti-inflammatory, easy to digest, satiating and easily used for energy as described above. (5)
3. Improves Energy Levels and Mood
Your brain is largely made up of fatty acids, so you need a steady supply from your diet to feel your best, think clearly, perform well at work and stay sharp well into older age. Medium-chain fats are believed to be one of the most easily digested, utilized and protective fatty acids that exists.
A 2004 study published in the Journal of Neurobiology of Aging found that the MCTs in coconut oil helped improved memory problems, including Alzheimer’s disease in older adults. (6) It only makes sense that a food that supplies fuel for your brain and also helps you absorb vitamins and minerals better will also make you feel more clearheaded, energetic and positive.
MCT oil helps not only feed your brain cells, but also improves your gut health — which is largely connected to cognitive functioning thanks to the “gut-brain connection.”
In one animal study published in the Journal of Animal Feed and Sciences, when pigs were either fed a standard feed mixture (the control) or the same mixture supplemented with two grams each of caprylic or capric acid MCTs, the pigs receiving MCTs showed improvements in bacterial gut health, performance, growth and digestion of nutrients, including proteins and fiber. (7)
4. Supports Digestion and Nutrient Absorption
Both MCT oil and coconut oil are beneficial for balancing bacteria in the gut microbiota, which in turn has positive effects on the digestive symptom, energy expenditure, and the ability to absorb vitamins and minerals from the foods you eat. Medium-chain fats can help kill a wide range of pathogenic viruses, strains and bacteria that cause digestive issues, including candida, constipation, diarrhea, food poisoning, stomachaches and so on. (8)
You also need to consume coconut and other healthy fats in order absorb fat-soluble nutrients found in various foods. These include nutrients like beta-carotene (a precursor of vitamin A found in plants like berries, squash and leafy greens), vitamin E, calcium, magnesium, phosphorus and lutein. When you consume a healthy diet filled with lots of different whole, plant foods but don’t get enough healthy fat sources at the same time, your body is basically not capable of utilizing these nutrients as well.
5. Has Antibacterial, Antiviral and Antifungal Properties
MCTs are powerful, natural antibiotics that help balance bacteria in the gut. In the age of antibiotic resistance, it’s meaningful to have natural methods to kill some harmful types of bacteria.
Here are some known to be killed by medium-chain fats: streptococcus (which causes strep throat, pneumonia and sinus infections), straphylococcus (which causes food poisoning and urinary tract infections), neisseria (which causes meningitis, gonorrhea and pelvic inflammatory diseases), and some other strains that cause stomach viruses, candida, ulcers and sexually transmitted diseases. (9)
Another great thing about MCTs is that they are capable of reducing “bad bacteria” without harming or removing “good bacteria.” That’s important, considering we need the good kind for intestinal health and digestive functioning.
According to some studies, medium-chain fats offer better protection from infections than longer-chain fatty acids do. A study published in the Journal of Nutritional Biochemistry found that fatty acids and monoglycerides with chain lengths varying from 8–12 carbons were found to be more strongly antiviral and antibacterial when added to milk and formula than long-chain monoglycerides.
Medium-chain lipids added to milk (lipid-enhanced milk) and formula inactivated a number of pathogens, including respiratory syncytial virus (RSV), herpes simplex virus type 1 (HSV-1), haemophilus influenzae and streptococcus. (10)
6. Can Withstand High-Heat Cooking
MCT oils are particularly good for cooking because they have a high “smoke point,” meaning they don’t oxidize from heat easily and can withstand high temperatures. This is crucial, because even certain “good fats” are not well-suited for cooking (like extra virgin olive oil or flaxseed oil, for example) and can become rancid oils somewhat easily.
Both coconut oil and MCT oil can be used for the most part in baked goods, sautés, stir-fries and grilled foods without oxidizing.
There are actually a few different forms of MCTs, some that are likely more effective than others. The four different kinds of MCTs include:
- caprioc (acid C6:0)
- caprylic (acid C8:0)
- capric (acid C10:0)
- lauric (acid C12:0)
Generally speaking, the shorter the chain (meaning the lower the number of carbons the acid has), the faster the body can turn the fatty acids into usable energy, in ketone form. Ketones are what the body produces when it’s using fat for energy instead of glucose.
Regardless of the exact kind of MCT, all are still beneficial for overall health — especially for people who have a difficult time digesting other forms of fats, including anyone with malabsorption problems, digestive disorders like leaky gut syndrome, Crohn’s disease, gallbladder infections and so on.
MCT Oil vs. Coconut Oil
There’s been no shortage of coconut oil uses and treatments proven by recent research — it provides not only MCTs (especially abundant levels of lauric acid), but also antibacterial properties, antioxidants, anti-inflammatories and more. The difference between MCT oil and coconut oil is that MCT oil is much more concentrated and contains mostly capric acid and caprylic acid. While coconut oil certainly has MCTs in it, concentrated MCT oil is almost entirely MCTs.
There are four different kinds of MCTs, which differ depending on the number of carbons there are connected to the fat molecules (this ranges between 6 to 12 carbons long). The MCTs in coconut oil are made up of about 50 percent of one kind (lauric acid) but typically contain the other three in varying amounts. MCT oil, on the other hand, is produced using fatty acids extracted from coconut and palm oil and is usually comprised of capric acid, caprylic acid or a blend of both.
Coconut oil is one of the best sources of lauric acid as you can see, which many studies have shown has antibacterial, antimicrobial and antiviral properties. Although about 90 percent of the fats found in coconut oil are saturated, a high percentage is not the very short chain MCTs that have less carbons (lauric acid has 12).
The fatty acids termed MCTs and lauric acid act somewhat differently in the body, although in the U.S., coconut oil and MCT oil manufacturers are legally allowed to claim that lauric acid is a type of MCT. Some people claim that lauric acid doesn’t biologically act like other forms of shorter MCTs (or at least as quickly), which is one reason why MCT advocates believe that MCT oil is somewhat superior.
Perhaps one of the biggest reasons that MCT oil sales have skyrocketed in recent years is due to growing popularity of “The Bullet Proof Diet.” “The Bulletproof Diet,” written by Dave Asprey, is a dietary approach for rapid weight loss and better cognitive health that recommends you receive 50 percent to 70 percent of your energy from healthy fats, especially MCT oil, grass-fed butter and coconut oil. (1)
The plan’s signature breakfast, “bulletproof coffee” — a mix of coffee, MCT oil and butter — promises decreases in hunger levels, the ability to fast easily, better brain function and mental clarity. While coconut oil benefits are still recognized by Bulletproof dieters, MCT oil is considered the gold standard, and the official Bulletproof site sells its own MCT oil, called Brain Octane Oil.
On the other hand, coconut oil does have some well-documented health benefits that concentrated MCT oils might be lacking. The biggest drawback to buying manufactured MCT oil is that you might not really know what you’re getting. In order to produce a liquid MCT oil that does not become solid at colder temps, it might need to be more refined than regular coconut oil.
So while some marketers of MCT oil might claim that their products contain more concentrated and diverse MCTs than real coconut oil does, it might be because they’re chemically altered. It could even have “filler” oils like omega-6 polyunsaturated fats. Another factor to consider is that most MCT oils on the market are manufactured via chemical/solvent refining, which can mean they require using chemicals like hexane and different enzymes and combustion chemicals.
The bottom line? Enjoy both coconut oil and quality MCT oil for their numerous benefits — just make sure you buy a high-quality MCT oil that clearly states what the ingredients are and how it was produced.
How to Use in Recipes
Some people are firm believers in taking MCT oil daily just like a supplement, straight from the spoon or mixed into drinks. MCT oil has no taste or smell, so this is an option if you’re really looking to increase your intake quickly. But be careful — a little goes a long way. People should start off with half a teaspoon and work their way up to one tablespoon.
How can you use MCT oil creatively at home without needing to simply drink “Bulletproof coffee” every morning? Some clever ways to get more MCT oil into your diet include:
- Making homemade mayonnaise in a blender (using MCT oil, an egg yolk, extra virgin olive oil, lime juice and salt)
- Whisking together a salad dressing (using MCT oil, raw honey, Dijon mustard and your favorite herbs)
- Adding some MCT oil to smoothies, shakes or yogurt (which stabilizes your blood sugar since it helps slow down the rate that glucose and fructose sugar molecules are absorbed)
- Using MCT oil in homemade baked goods instead of coconut oil (sub out about 1/3 of the coconut oil for MCT oil instead)
Don’t forget that just like with coconut oil being used for your hair, MCT oil is great for your skin and hair. MCT oil can be used in homemade teeth whitening treatments, moisturizer, lip balm, sunscreen, shaving cream, conditioner, facial masks, salt scrubs and essential oil blends.
- The difference between MCT oil and coconut oil is that MCT oil is more concentrated and contains different proportions of MCTs. While coconut oil certainly has MCTs in it, concentrated MCT oil is almost entirely MCTs.
- Scientifically proven benefits of MCT oil include its ability to help with weight loss or maintenance, heart health protection, improved energy levels and mood, and digestion and nutrient absorption support. In addition, MCT oil has antibacerial, antiviral and antifungal properties, and it can withstand high-heat cooking.
From the sound of it, you might think leaky gut only affects the digestive system, but in reality it can affect more. Because Leaky Gut is so common, and such an enigma, I’m offering a free webinar on all things leaky gut. Click here to learn more about the webinar.
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