I want to know what is in beef that triggers migraines. I can eat anything but beef (deer, mutton, bison, pork, seafood, fish, fowl etc.) with no migraines. Even vegetables cooked in beef stew and pastries made with beef fat trigger migraines. I was first stricken with a migraine when I was thirteen. Over the years, many doctors gave advice and drugs without any of them ever suggesting that a food could trigger migraines. I went on a vegetarian diet for two months, then ate beef and discovered beef to be the culprit. I was shocked and incredulous at first, but as long as I carefully avoid foods containing beef, I am free of migraines. I have not had a migraine in over twenty years now.