Intolerance Come From?
Histamine intolerance comes about as a result of too little histamine-degrading enzymes in your gut (DAO).
The result is accumulated histamine. This causes numerous symptoms that resemble an allergic reaction
It can come from gut damage, alcohol, drugs/supplements or a microbial imbalance.
If your histamine issues are strictly as a result of a lack of DAO enzymes, then all you need to do is take the enzyme.
I suspect, however, that many people who complain of histamine intolerance don’t always have issues with the enzyme in particular. Rather, I believe such people are Th2 dominant and just produce excess histamine after meals.
For this post I will discuss all the ways in which you can reduce histamine overall, not only ways to increase the enzyme.
Do You Have Histamine Intolerance?
Reduced DAO levels can also lead to the following symptoms:
Skin problems such as rashes, itch, hives, flushing, eczema, psoriasis, and even acne (R).
Chronic headache (R)
Dysmenorrhea (R)
Flushing (R)
Gastrointestinal symptoms (R)
Intolerance of histamine-rich food and alcohol (R)
Nasal mucus (R)
Asthma attacks (R)
I recommend seeing a well-done flow chart that seems pretty comprehensive.