Comment by smeej

Thanks for the suggestions. I've done extensive trials with the minerals and vitamin D, and both hair and serum tests keep saying that's not the problem.

I'm on NAC too, but oregano oil gave me the worst heartburn I've ever had in my life. Do you think the black seed oil might neutralize it on that front?

I did carnivore for about three weeks before my body was absolutely shutting down. It was catastrophic for me. I did spend 20 months on an elimination diet of slow-cooked meat and boiled vegetables (exclusively, without a single cheat, which was pretty brutal), which helped clear up some intestinal issues that were misdiagnosed as ulcerative colitis, but it didn't do a thing for the headaches.

It's somewhat reassuring that most of the out-of-the-box suggestions people have are things I've already tried, because at least it does confirm for me that I've done a decent job of covering my bases, but alas, the pain persists.