Category Archives: Serotonin

Are Low L-Tryptophan Levels a Cause of Aggression?

Posted on December 15, 2016 by Robert Barrington

L-tryptophan is an essential amino acid required for normal human metabolic regulation. There is current interest in L-tryptophan because it has been shown that low levels of plasma tryptophan may be involved in the development of depression. This relates to … Continue reading →

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Insomnia and L-Tryptophan Depletion

Posted on August 3, 2016 by Robert Barrington

L-tryptophan is an an essential amino acid required for the production of serotonin in the neurones of the brain. In this role, tryptophan crosses the blood brain barrier and is converted to 5-hydroxytryptophan by the enzyme tryptophan hydroxylase, also the … Continue reading →

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Abnormal Tryptophan Metabolism Associated With Mental Disorder

Posted on July 12, 2016 by Robert Barrington

Tryptophan is an essential amino acid that fulfils two main roles in human nutrition. Firstly, tryptophan can be converted to niacin, a member of the B vitamin family of vitamins and dietary tryptophan is therefore an important source of niacin … Continue reading →

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Foods to Boost Serotonin?

Posted on May 1, 2016 by Robert Barrington
Posted in 5-Hydroxytryptophan, Anxiety, Depression, L-tryptophan, Serotonin | Comments Off on Foods to Boost Serotonin?

Eggs: Perfect For Breakfast

Posted on September 20, 2015 by Robert Barrington

Eggs are considered detrimental to the health by many because of their high content of cholesterol and saturated fat. However, the role of the egg in human nutrition has been distorted considerably. This is particularly true when considering the types … Continue reading →

Posted in Alpha Linolenic Acid, Brain, Cholesterol, Eggs, Glycaemia, Glycaemic Index, Glycaemic load, Melatonin, Protein, Saturated Fatty Acids, Serotonin | Comments Off on Eggs: Perfect For Breakfast

The Tryptophan Paradox

Posted on April 30, 2015 by Robert Barrington
Posted in Bananas, Brain, Carbohydrate, Depression, L-tryptophan, Melatonin, Serotonin | Comments Off on The Tryptophan Paradox

Serotonin Deficiency?

Posted on April 19, 2015 by Robert Barrington

Serotonin is an important neurotransmitter in the central nervous systems on mammals. In man, research has uncovered many functions for serotonin. Originally discovered in both Italy and American, the name serotonin derives from the word ‘sero’ for blood and ‘tonin’ … Continue reading →

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L Tryptophan for Anxiety or Depression

Posted on March 1, 2015 by Robert Barrington
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5-Hydroxytryptophan

Posted on November 20, 2014 by Robert Barrington
Posted in 5-Hydroxytryptophan, L-tryptophan, Serotonin | Comments Off on 5-Hydroxytryptophan

L-Tryptophan and 5-Hydroxytryptophan

Posted on October 4, 2014 by Robert Barrington

L-tryptophan is an essential amino acid. That means without a dietary source, humans die. Amazing then that its sale as a supplement was banned in the United Kingdom and the United States. It is present in most foods in the … Continue reading →

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