I've found out now that, even though estrogen does relieve the headaches, I just can't tolerate the side effects - no matter how small a dose I take. I tried caffeine pills - up to 50 mg. per night. They did seem to relieve the headaches on 2-3 nights, but I had to keep upping the dose to have that happen after that - and I don't want to do that because it bothers my otherwise pretty good sleep - even with the headaches! So on to the next thing. I'm already on a very good diet, mostly chicken, some beef and sardines, and boatloads of cooked vegetables, with a few other additions. Been on it for almost 8 years and my health is actually wonderful - with the exception of these stupid headaches. About a month and a half ago, I started near infrared sauna therapy on a daily basis. Still too early to tell definitively, but the headaches seem to be receding. The sauna is supposed to eliminate toxic metals in my system - most of which have accumulated since before my diet change (aluminum, mercury, etc.) Hair analysis is wonderful for actually determining what's going on in that department. The sauna is starting to make me sweat some - which is the whole point. I have never been much of a "sweater", even in hot weather. I'm going to continue the daily saunas and see what develops! Maybe it will also help my somewhat mild brain fog. Have high hopes!! Will try to keep you posted.