Besides being an excellent source of omega fatty acids, lignan and mucilage, flax seed also contains a number of amino acids which add to the nutritional value of flax seed. These amino acids include Tryptophan, threonine, isoleucine, leucine, lysine, as well as numerous others.
Tryptophan is used in serotonin which is vital for proper mental functioning and a problem with serotonin functioning can lead to disorders such as depression and other mood disorders. Tryptophan is also a strong tranquillizer and can be used to treat insomnia.
Threonine is perhaps less well known than Tryptophan but still a vital amino acid in the body and helps to balance protein in the body, support the cardiovascular system, liver, central nervous system and the immune system.
Isoleucine is another little known but essential amino acid in our diets. It is necessary for the formation of hemoglobin as well as the control of blood sugar levels. Deficiency symptoms may include headaches, dizziness, fatigue, depression, confusion and irritability.
Leucine is also used for control of blood sugar levels, as well as "the growth and repair of muscle tissue (such as bones, skin, and muscles), growth hormone production, and wound healing as well as energy regulation. It can assist to prevent the breakdown of muscle proteins that sometimes occur after trauma or stress. It may also be beneficial for individuals with phenylketonuria - a condition in which the body cannot metabolize the amino acid phenylalanine" (http://www.anyvitamins.com/leucine-info.htm)
Lysine is used to produce antibodies, hormones and enzymes as well as helping in calcium absorption and tissue repair. It also helps in the proper growth and development of children.
Besides these essential amino acids flax seed also contains many other essential amino acids including large supplies of aspartic acid, glutamic acid and glycine. In order to ensure you get all the amino acids you need in your diet you should supplement your diet with flax seeds and flax seed oil supplements.
Flax seed contains a number of essential amino acids and through supplementing your diet with flax seeds and flax seed supplements you are ensuring that your body gets the correct amounts of these amino acids including Tryptophan, threonine, isoleucine, leucine, and lysine.