Else Toddler is complete nutrition for ages 12 months+. Mammalian milk does contain saturated fat and cholesterol, but these are not essential because they can be made by the body.  Certain types of fats, omega-6 and omega-3 fatty acids cannot be made by the body and are essential in the diet. The essential fatty acids are Linoleic Acid (LA, omega-6) and ALA (alpha-linolenic acid, omega-3). The body can make all other omega-6 fats (ARA) and omega-3 fats (DHA, EPA) from the two essential fats LA and ALA.