So I was recently diagnosed with low DAO enzyme (the enzyme needed to break down Histamine in the gut). I have had stomach problems all my life but seems like my reactions have gotten more severe since starting Levo over a year ago. Then I did some research and found this study where they found that levo and carbimazole both lower MAO and Histaminase (DAO) in the gut (in rats).
So was I Histamine Intolerant before starting Levo? Or did Levo do this to me? My DAO reading was so low that it didn't even register in the range, was given PPI and told to take antihistamines for life!?!? What came first the chicken or the egg?
Does anyone else have any information on this? I could only find this one report. I know DAO is rarely ever tested, so what do you think? There's a chance this medication is causing gut problems or at least is worsening them in thyroid patients.