Eating a healthful diet can help prevent migraines. A healthful diet should consist of fresh foods, including fruits, vegetables, whole grains, and lean proteins. Fresh foods are less likely to have added food preservatives, such as monosodium glutamate (MSG). Preservatives can trigger migraines in some people, so avoiding foods that contain them can help.

Reference: By Rachel Nall RN, MSN,  Reviewed by Natalie Olsen, RD, LD, ACSM EP-C, https://www.medicalnewstoday.com/articles/323161.php , June 28th, 2019