"The Ramen Noodles, total MSG bomb!"
Among the things outed by the diet: all soy.
Onions contain tyramine, a known migraine trigger. It's also in bananas, nuts, highly aged cheeses. But there are tons of triggers, such as weather and stress and hormones and the amount of mail you have to deliver. When the multiplicity of triggers redlines, you get a headache.
Says Bucholz, lighten your trigger load.
Interesting. The thing that kills the diet for me, no caffeine. Fortunately, I don't get migraines.
Give it a listen.