I know artificial sweeteners aren't the best, but from time to time, I enjoy a little in my coffee. This morning, as I mixed it in my cup of joe, a stranger commented on my choice. He explained to me that it has been known to cause migraines. I told him that I have yet to receive any. He said that I probably will get one huge migraine to make up for the ones I haven't been receiving. Is this stranger bluffing, or do I have a gigantic migraine to look out for? Help!