Eating processed foods high in nitrites or monosodium glutamate (MSG) and drinking too much alcohol are potential migraine headache triggers. After performing a literature review of more than 180 studies, investigators found that eating more natural foods such as fresh vegetables, fresh fruits, and fresh meat while avoiding processed foods high in nitrites or MSG and managing caffeine consumption is an effective way to prevent such headaches.
The Journal of Head and Face Pain, October 2016