Over the years, omega-3s have been stripped from the foods we eat. Where have they gone? Blame it on altered eating habits:

Hydrogenation of oils in food processing

Decreased fish consumption

Loss of cereal germ in modern milling practices

Increased consumption of corn, sunflower and sesame oils

Increased sugar consumption, which interferes with enzymes that synthesize fatty acids

Increased consumption of trans-fatty acids, such as margarine and deep-fried foods

Source: The Omega Plan (HarperCollins Publishers) by Artemis Simopoulos, MD, and Jo Robinson.