Your brain is really fat! In fact, 60% of it is made up of fatty acids, these are the long snake-like building blocks of fat molecules required for proper brain structure and function. Fatty acids come in many varieties, yet the brain has a clear favourite — and salmon is full of it. More than two-thirds of the brain’s fatty acids are docosahexaenoic acid (DHA), an omega-3 fatty acid found primarily in oily fish, although some vegetarian sources exist as well. We are metabolically incapable of making DHA on our own and must, therefore, get it from our diet.