What is L-tyrosine and how can it help anxiety?

"Lyrosine is one of the amino acids, which are the building blocks of protein. The body makes tyrosine from another amino acid called phenylalanine. Tyrosine can also be found in dairy products, meats, fish, eggs, nuts, beans, oats, and wheat.

Tyrosine is used in protein supplements to treat an inherited disorder called phenylketonuria (PKU). People who have this problem can’t process phenylalanine properly, so as a result they can’t make tyrosine. To meet their bodies’ needs, supplemental tyrosine is given.

People take tyrosine for depression, attention deficit disorder (ADD), attention deficit-hyperactivity disorder (ADHD), the inability to stay awake (narcolepsy), and improving alertness following sleep deprivation. It is also used for stress, premenstrual syndrome (PMS), Parkinson's disease, Alzheimer's disease, chronic fatigue syndrome (CFS), alcohol and cocaine withdrawal, heart disease and stroke, ED (erectile dysfunction), loss of interest in sex, schizophrenia, and as a suntan agent and appetite suppressant.

Some people also apply tyrosine to the skin to reduce age-related wrinkles.

How does it work?
The body uses tyrosine to make chemical messengers that are involved in conditions involving the brain such as mental alertness."

See entire explanation @ WebMd

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