Tyrosine is a conditionally essential amino acid derived from the essential amino acid phenylalanine which the body uses to synthesise proteins. It has a number of functions which may benefit sufferers of environmental illness.
Production of Catecholamines - Tyrosine is the basic building block of this important group of neurotransmitters which include dopamine, adrenaline/epinephrine, and noradrenaline/norepinephrine have an energizing effect on the brain. By providing the raw material for the production of catecholamines tyrosine may provide relief from stress and forms of depression where lack of motivation is prominant.
Production of Enkephalins - Tyrosine is also a component of other chemicals in the brain called enkephalins which are related to endorphins and have similar pleasure-promoting and pain-relieving effects.
Production of Thyroid Hormones - Tyrosine combines with iodine to form the thyroid hormones. These hormones control the rate of metabolism of every cell in the body and deficiency can lead to symtpms such as fatigue, depression, cold hands and feet, poor concentration and mental sluggishness, and weight gain.
A tyrosine deficiency therefore can contribute to fatigue, mood disorders, cognitive dysfunction, and pain disorders. All of which are common in chronic fatigue syndrome, fibromyalgia, multiple chemical sensitivity, and other environmental illnesses.
Tyrosine is widely available in as a nutritional supplement, either alone or in combination products, and is inexpensive.
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