Fats in human breast milk provides about 50% of energy needed for the development and growth newborn infant. About 98% of the fats provided by the human milk are in the form of triglycerides, which themselves are molecules consisting of mixtures of three fatty acids bonded to sn-1, sn-2, and sn-3 positions of a glycerol backbone.[1] The human mammary gland provides the baby with a unique fat composition where the fatty acids arranged in specific combinations, different from the triglycerides in other human tissues and plasma,[2] or from common dietary fats and oils. Palmitic acid (C16:0) is the major saturated fatty acid in human milk, accounting for 17-25% of the total fatty acids,[2] with over 70% of 16:0 is esterified at the milk triglyceride sn-2 position.[2][3] The major unsaturated fatty acid in human milk is oleic acid (18:1n-9) and this is mostly esterified at the triglyceride sn-1,3 (outer) positions. The positioning of palmitic acid at the sn-2 position is conserved in all women, regardless of race or nutrition, unlike the general fatty acid profile of human milk.