from Alan Goldhamer,

"The best way to get your needed essential fatty acids is by eating a
health-promoting
diet derived exclusively from whole natural foods. The type of diet
recommended
by the National Health Association contains well over 5% of calories
from
linoleic acid (see chart). Essential fatty acids are found abundantly
in green
leafy vegetables, flaxseeds, soybeans, and nuts and seeds. Eating a
health-promoting diet will provide adequate amounts of the essential
fatty
acids, without the problems associated with animal products, processed
oils,
and supplements, which are often promoted as sources for these
essential
nutrients.Walnuts, flax seeds and green vegetables including purslane
are a
rich source of the desirable Omega-3 fatty acids."