For me, coffee always causes GI irritation and “stimulation,” even though I only fill my cup 1/3 with actual coffee and the rest with water. Diet coke can cause the same thing in me, but without it I get massive “withdrawal” headaches. And, my doctor actually recommended I keep on the caffeine to stave off the migraines I get almost daily.
I still drink it too. It only causes the effect probably 1/10 times or so though for me. I don’t get it from anything else I’ve had so far.
For me, coffee always causes GI irritation and “stimulation,” even though I only fill my cup 1/3 with actual coffee and the rest with water. Diet coke can cause the same thing in me, but without it I get massive “withdrawal” headaches. And, my doctor actually recommended I keep on the caffeine to stave off the migraines I get almost daily.