Green tea may be low histamine. This is because, while green tea itself is low in histamine, it also contains caffeine, which inhibits the functionality of DAO. Diamine oxidase (DAO) is the enzyme responsible for clearing the body of histamine, so when it’s impaired, this keeps histamine levels from lowering. If your histamine bucket is already low, you may be able to tolerate the caffeine in green tea, but this is only something you should try to reintroduce after an initial elimination diet. If you can tolerate green tea histamine levels, be sure to only sweeten it with honey or another low histamine sweetener.
