Well aren't some people slow metabolizers of caffeine due to enzymatic deficiency, or those we call "caffeine sensitive"? Would these same people be sensitive to theobromine?
Possibly, but not necessarily. Caffeine is only partially metabolized to theobromine and has of course a much stronger effect itself, so I doubt whether the small percentage of caffeine that is metabolized to theobromine could contribute much to caffeine sensitivity.
I know it won't kill people but why risk putting yourself over the anxiety threshold if at all avoidable?
Because dark chocolate/cocoa is one of the healthiest, most flavonoid-rich superfoods on the planet? And not to forget, because it tastes darn good (IMO). Oh, and because for probably 99% of all people it is perfectly safe. Almost every child drinks cocoa and eats chocolate!
Personally dark chocolate is a double edged sword to me. I love it but it can create a bit of anxiety if I eat it and then have nothing better to do than focus on its effects.
Duh! Everything creates "a bit of anxiety" if you have "nothing better to than focus on its effects", especially if you are convinced that there are effects. Never underestimate the placebo response.
I once got an extremely low heart rate, along with anxiety and shortnes of breath because I thought I had eaten foxglove and I knew that foxglove poisoning causes bradycardia (I was collecting wild greens in spring). Later I classified the leaves and they were of a completely harmless herb.
Edited by timar, 14 April 2014 - 10:22 AM.