Food/ drink intolerance.

Hi.
I was just wondering has anyone thought about/ had a food intolerance test as this can be a trigger if you're eating something that you're intolerant to but don't know it. I'm aware different foods affect people in different ways, but if anyone has found this is causing their migraines it might be beneficial to others if they'd share this, there may be a certain food/ drink( other than the common ones) that we can all identify with of which we find a trigger and could help others to maybe eliminate them just to see if that works for them.
Annestar.