Tyrosine in conjunction with other nutrients is found to promote and regulate mood.  Lack of tyrosine may induce various forms of depression.  It also suppresses the appetite and helps to reduce body fat.  It promotes the production of melanin, which is the pigment responsible for skin and hair color, as well as the proper functioning of the adrenal, thyroid, and pituitary glands.  Symptoms of tyrosine deficiency include low blood pressure, low body temperature in the hands and feet.  The coldness in the extremity is a related to the reduction of thyroid hormones often referred to as hyperthyrodism.

The supplement L.-tyrosine is often used to reduce stress, anxiety, depression, allergies, and headaches.  It is also helpful for chronic fatigue.

Individuals taking monoamine for depression should restrict the tyrosine intake through food, and should not take supplements containing L.-tyrosine.  Failure to adhre to this caution may lead to sudden and dangerous rises in blood pressure.  Additionally, anyone taking depression medication should be concerned about taking any form of tyrosine enhancement.

Sources of tyrosine in food include:  avocados, bananas, dairy products, lima beans, pumpkin seeds and sesame seeds.