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L-Tyrosine; The chemical name of Tyr is 2-amino-3-hydroxyphenylpropionic acid, which is an aromatic polar compound containing phenolic hydroxyl group α- amino acid. Tyrosine is a conditionally essential amino acid and a ketogenic amino acid.

Thyroid Hormone

The thyroid hormones triiodothyronine (T3) and thyroxine (T4) help regulate growth and metabolism in the body.

It’s important that T3 and T4 levels are neither too high nor too low.

Supplementing with tyrosine may influence these hormones.

This is because tyrosine is a building block for the thyroid hormones, so supplementing with it might raise their levels too high.

Therefore, people who are taking thyroid medications or have an overactive thyroid should be cautious when supplementing with tyrosine.

Tyrosine is also a precursor to levothyroxine, a thyroid hormone that’s low in individuals with hypothyroidism or Hashimoto’s thyroiditis. However, tyrosine may not be appropriate for you if you have an underactive thyroid.

Tyrosine replenished thyroid hormones that were low due to stress.In fact, some endocrinologists report that patients who take tyrosine see a further decrease in thyroid function. In theory, that could happen because tyrosine boosts norepinephrine, which regulates thyroid hormones and is already often too high in people with hypothyroidism.If you have concerns, talk to your health-care provider before taking tyrosine.

Benefits of L-tyrosine

What is L-tyrosine used for? While L-tyrosine benefits may help with stress and depression, Barth says that more research is needed to fully understand the role the amino acid plays in our bodies.

May help in stressful situations

Who hasn’t been stressed out? And when we’re stressed out, we may have trouble thinking clearly, remembering information and paying attention.

Research is looking at whether L-tyrosine can help improve one’s mental performance when in a stressful situation.

In one example, participants who performed a test that measured their cognitive flexibility did better when taking an L-tyrosine supplement versus a placebo. Another study shows that people who worked on a mentally demanding task saw their working memory improve while taking L-tyrosine.

“L-tyrosine hasn’t been shown to improve memory under resting conditions,” explains Barth. “It has been shown to alleviate reduced memory under stressful conditions. It’s that stress component that’s key. If you’re stressed then you’re going to have depleted neurotransmitters and therefore, you probably have low L-tyrosine.

May help with depression

Depression will affect 1 in 6 people during their lifetime. And while we don’t know the exact reasons someone experiences depression, one belief is that it has to do with your brain’s chemistry and its imbalance of neurotransmitters like serotonin and dopamine.

L-tyrosine can increase neurotransmitters in your brain, making it a likely candidate as a remedy for depression.

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