Tyrosine is a non-essential amino acid that is produced in the body from another amino acid, phenylalanine. It plays an important role in various physiological functions, including the production of neurotransmitters, hormones, and proteins.
Tyrosine is an important precursor for the synthesis of several neurotransmitters, including dopamine, norepinephrine, and epinephrine. These neurotransmitters are involved in regulating mood, attention, and the stress response. Tyrosine is also a precursor for the production of thyroid hormones, which are important for regulating metabolism and growth. Additionally, tyrosine is used to produce melanin, the pigment that gives color to the skin, hair, and eyes.
Tyrosine is found in a variety of protein-rich foods, including meat, fish, eggs, dairy products, soybeans, nuts, and seeds. It can also be found in some supplements marketed for cognitive or athletic performance.
The daily requirements for tyrosine are not well established, as the body can synthesize it from other amino acids. However, some studies suggest that a daily intake of 1000-1500mg of tyrosine may be beneficial for cognitive or athletic performance.
Tyrosine deficiency is rare, as the body can produce it from phenylalanine. However, a deficiency of phenylalanine, which can occur in people with the rare genetic disorder phenylketonuria (PKU), can lead to a deficiency of tyrosine.
Tyrosine is generally considered safe, and there is no established upper limit for its intake. However, some studies suggest that high doses of tyrosine supplements may cause gastrointestinal distress, headaches, and an increase in blood pressure.
Most people can obtain sufficient tyrosine from a balanced diet that includes protein-rich foods. However, some people may benefit from tyrosine supplements, such as athletes or people with certain medical conditions. It is important to consult a healthcare professional before taking tyrosine supplements, especially if you are pregnant, breastfeeding, or have a medical condition.
Tyrosine was first isolated in 1846 from cheese.
Tyrosine is the precursor to melanin, the pigment that gives color to the skin, hair, and eyes.
Tyrosine is often used in the food industry as a flavor enhancer.
This list shows food that are top sources of Tyrosine and the quantity of Tyrosine in 100g of food