Your reference to nitrates reminded me of this other topic that was on hacker news today about migraines being caused by microbes in the mouth interacting with

Your reference to nitrates reminded me of this other topic that was on hacker news today about migraines being caused by microbes in the mouth interacting with foods containing nitrates....https://news.ycombinator.com/item?id=12747773 https://news.ycombinator.com/item?id=12747773