A low-carb diet cut the number of days people had migraines in half, possibly by forcing the brain to run on ketones instead of glucose
Source:
https://www.newscientist.com/article/2213394-ketogenic-diet-may-stop-migraines-by-changing-the-brains-fuel/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home