preformed DHA may be required in breastmilk or formula for adequate development, as DHA supplementation in formula was found to improve cognitive development up to one year of age. The effects of DHA supplementation in early childhood after one year are unclear.

The IUPAC Lipid Handbook provides a very large and detailed listing of fat contents of animal and vegetable fats, including ?-3 and -6 oils. The National Institutes of Health's EFA Education