Histamine intolerance is the intolerance towards “normal” levels of histamine in food caused by a decreased activity of the histamine-degrading enzymes diamine oxidase (DAO – degrades in the gut) or histamine N-methyltransferase (HNMT – which degrades histamine in the skin and brain).
Because of the multifaceted nature of the symptoms, the existence of histamine intolerance has been underestimated.
Link to external websites for further research:
National Institutes of Health – Histamine Intolerance
NIH – Pseudo Allergies are Linked to Histamine Intolerance
NIH – Importance of a Histamine Free Diet
Histamine Intolerance Information
A Visual Guide to Histamine Intolerance (What to and not to eat).
Genetic Connection Histamine Intolerance, MTHFR, Methylation
Facebook Support Group
The Low Histamine Chef