The present invention provides a triglyceride having medium-chain fatty acids bound at the 1,3-positions and arachidonic acid bound at the 2-position with effects of preventing decline of, improvement or enhancement of normal responses of cognitive abilities of a healthy person. The present invention further discloses compositions comprising the triglyceride having medium-chain fatty acids bound at the 1,3-positions and arachidonic acid bound at the 2-position and methods of preparation thereof.
