certain fruits (avocado, citrus, bananas, figs, walnuts)
chocolate
certain additives
Another cause of headache can be a reduction in the activity of the DAO enzyme or diamine oxidase enzyme. This enzyme metabolizes the histamine ingested in the diet, so a reduction in its activity increases the levels of histamine in the body and this can favor the appearance of pain.
Female hormones also interfere with the functioning of this enzyme, making women more vulnerable to headaches and migraines.
