The seeds of the flax plant are extremely high in essential fatty acids (EFAs), containing between 50 to 60% linolenic acid (triple unsaturated omega-3) and between 15 to 25% linoleic acid (double unsaturated omega-6). There are many good sources for information concerning the benefits of EFAs, much more information than will be discussed here.
Because of the high amounts of unsaturated fats, Flax seed oil should be fresh, and not exposed to heat or light. Flax Oil can be purchased in soft-gel capsules and is also available in bottles. It should taste pleasant, not rancid, if it is fresh.