Whole Flax Seeds contain both lignans and essential fatty acids (EFA's). EFA's are essential for maintaining good health by acting as building blocks in cell membranes and aiding in the production of hormone-like substances that are necessary for energy metabolism. Lignans, also known as complex carbohydrates or polysaccharides, are an important part of high-fiber foods that come from plants. Flax seeds have 75-800 times more lignans than as many as 68 other fruits and vegetables. They are the richest available source of plant lignans. Organic flax seeds are a vegetarian and gluten free source of omega-3 essential fatty acids (EFA's). Since our bodies cannot produce EFA's, they must be obtained from our diet. Our bodies depend on EFA's for normal cell function. Essential fatty acids act as building blocks in cell membranes, and produce hormone-like substances necessary for energy metabolism and cardiovascular and immune health.