Did you know that approximately 60% of the brain is made up of fat? Yep! Crazy hey? Not only does fat play a huge role in the structural components of the brain, essential fatty acids (EFAs) in particular are involved in the synthesis and functions of brain neurotransmitters—that is, the chemical messengers that communicate to other parts of the body. But not all fats are created equal, here we take you through the differences!