Category Archives: L-tyrosine

L-Tyrosine and Stress

L-tyrosine is a non-essential amino acid, that is a precursor to the catecholamine neurotransmitters. When consumed l-tyrosine can cross the blood brain barrier, where it can be converted to adrenaline, noradrenaline and dopamine. Supplemental l-tyrosine has been shown to increase … Continue reading

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Cayenne Pepper, Catechins and Caffeine: Fat Burners

A number of herbs have traditionally been used for weight loss. Of these cayenne pepper and green tea are two of the most commonly used. Green tea contains a number of components that may induce weight loss including caffeine and … Continue reading

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Why Is Depression So Difficult To Treat?

The aetiology of depression is complex. The reason for this may be that depression is caused by different things is different people. The traditional view of depression is that it s caused by a deficiency of serotonin in the brain. … Continue reading

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L-Phenylalanine and DL-Phenylalanine: Differences

L-phenylalanine is an essential amino acid required for the synthesis of proteins. In addition, L-phenylalanine is the substrate for the formation of the catecholamine neurotransmitters and hormones. The catecholamines are adrenaline, noradrenaline and dopamine, and in the brain they play … Continue reading

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The Role of Dopamine in Mood

Dopamine is a neurotransmitter in the brain that is synthesised in a chemical pathway originating from the amino acid L-phenylalanine. The enzyme phenylalanine hydroxylase converts L-phenylalanine to L-tyrosine, and then the enzyme tyrosine hydroxylase converts L-tyrosine to L-DOPA. Finally, L-DOPA … Continue reading

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Do Obese Individuals Have Impaired Catecholamine Metabolism?

The catecholamines adrenaline, noradrenaline and dopamine are produced from the non-essential amino acid L-tyrosine through a series of enzymatic reactions that are controlled by a rate limiting step catalysed by tyrosine hydroxylase. Catecholamines are important neurotransmitters in the brain that … Continue reading

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L-Tyrosine For Stress

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Foods That Affect Mood

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Aspartame and Glucose: Bad Combination?

Although the dangers of aspartame are well known to the public, the scientific community appears reluctant to research the biochemistry and neurophysiology of the sweetener. The reason for this is quite simple. The food industry is very powerful and rich … Continue reading

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Protein: Its Role as a Brain Food

Amino acids are nitrogenous compounds required by the body to form proteins. Many people are aware that protein is an important structural component of the body. Protein makes a good construction material because it can be twisted and bonded to … Continue reading

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