Eagle 2014: ADHD impacted by sulfotransferase (SULT1A) inhibition from artificial food colors and plant-based foods

scientistPhysiology & Behavior, 135 (2014), 174-179.

SULT1A inhibitors in foods, including natural substances and artificial food colors, have a role in ADHD that can both worsen or improve symptoms. … SULT1A inhibition can influence brain catecholamines through the intermediary of plasma tyrosine levels, which are influenced by dopamine inhibition of intestinal tyrosine hydroxylase.

Note: SULT1A is an enzyme also known as PST.  This is a complicated study for those without an organic chemistry background, but it basically gives a clue why some children appear to get worse when first put on the diet.

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