Medium-Chain Triglycerides

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Also indexed as:

MCT

Related Topics

See also:

• Medium-Chain Triglycerides for Sports & Fitness

Medium-chain triglycerides are a class of fatty acids. Their chemicalcomposition is of a shorter length than the long-chain fatty acids present inmost other fats and oils, which accounts for their name. They are also differentfrom other fats in that they have a slightly lower calorie content¹ andthey are more rapidly absorbed and burned as energy, resembling carbohydratemore than fat.²

Where are they found?

Medium-chain triglycerides are found in coconut oil, palm kernel oil, and butter. Medium-chain triglycerides are also available as a supplement.

Health Concerns

Medium-chain triglycerides have been used in connection with the following conditions (refer to the individual health concern for complete information):

Rating	Health Concerns
	Athletic performance Type 2 diabetes
Reliable and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit. An herb is primarily supported by traditional use, or the herb or supplement has little scientific support and/or minimal health benefit.

Deficiency Symptoms

Who is likely to be deficient?

Most people consume adequate amounts of fat in their diets and many people consume excessive amounts, so extra fat intake as medium-chain triglycerides is unnecessary.

Dosage

How much is usually taken?

The best amount of medium-chain triglycerides to take is currently unknown. Athletes are not likely to benefit from less than 50 grams during exercise. Larger amounts may possibly help some, but may also impair performance if not combined with carbohydrate.

Side Effects

Are there any side effects or interactions?

Consuming medium-chain triglycerides on an empty stomach can lead to gastrointestinal upset. Anyone with cirrhosis or other liver problems should check with a doctor before using medium-chain triglycerides. Two reports suggest that medium-chain triglycerides may raise serum cholesterol and/or triglycerides.^{3, 4} Medium-chain triglycerides are actually the preferred fatty acid source for cirrhotic patients, but only when used intermittently.⁵

At the time of writing, there were no well-known drug interactions with medium-chain triglycerides.

References

1. Bach AC,Ingenbleek Y, Frey A. The usefulness of dietary medium-chain triglycerides inbody weight control: fact or fancy? J Lipid Res 1996;37:708-26.
2. Bach AC, Babayan VK. Medium-chain triglycerides-an update.Am J Clin Nutr 1982;36:950-62.
3. Cater NB, Heller HJ, Denke MA. Comparison of the effects of medium-chain triacylglycerols, palm oil, and high oleic acid sunflower oil on plasma triacylglycerol fatty acids and lipid and lipoprotein concentrations in humans. Am J Clin Nutr 1997;65:41-5.
4. Hill JO, Peters JC, Swift LL, et al. Changes in blood lipids during six days of overfeeding with medium or long chain triglycerides. J Lipid Res 1990;31:407-16.
5. Fan ST. Review: nutritional support for patients with cirrhosis. J Gastroenterol Hepatol 1997;12:282-6.

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Last Review: 01-21-2009

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