MCT, or medium-chain triglyceride, oil is an engineered fat that is designed to be more easily digested than most fats. Fats are made from fatty acids that consist of chains of carbon atoms. Medium-chain triglycerides specifically contain medium-length fatty acids.
Many fats normally contain long-chain fatty acids, and these fats are relatively slow and difficult to digest. They are absorbed from the intestines into the lymphatic system and require bile salts for digestion.
Medium-chain fatty acids are absorbed from the intestines directly into the bloodstream and pass immediately to the liver via portal circulation. As part of a controlled diet, medium-chain triglycerides sometimes induce ketogenic metabolism, which is used to treat juvenile epilepsy and as a weight-loss technique.