Rs1050891

This SNP is part of the HNMT gene known as C939T (or 939A>G) that regulates histamine. According to the lack of a C allele for this gene indicates an increase in ADHD behavior for children age 3 and 8/9 when they have been exposed to certain food additives: sunset yellow, carmoisine, tartrazine, ponceau 4R, quinoline yellow, allura red AC and sodium benzoate