Earlier quoted context omitted.
That's because you're addicted. You're dependent on it to wake up, and when you don't use it, you get withdrawal headaches. You may need to go about a month caffeine free to see the benefits
Or GP may be prone to migraines and potentially doesn't know it... I am and find caffeine pretty good at dulling their effects over multi-day migraines (Which I get fairly regularly). The frequency of migraines for me is independent of caffeine consumption; I've gones months with no caffeine and suffered though migraines, just as I've gone through months of heavy coffee/tea drinking and suffered (a little less) throu…
I can go without coffee for weeks, have gone 2 months last year. Everything seems fine, but some days, I wake up in the morning with a terrible, terrible headache that fortunately goes away after a rather high dose of paracetamol+aspirin.
Sometimes it occurs in the evening when I come home, seemingly fine, but then bam, hammer to the head.
If I drink coffee regularly, I pretty much never get them...