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by graeme 2440 days ago
Same here. My digestion was worse when I was on it, as well as my overall energy levels.

It seems there is a gene that determines whether someone is a fast or slow metabolizer of caffeine. If I ever get such a test done I'll definitely check if I'm on the slow spectrum. It's associated with worse coffee outcomes.

https://well.blogs.nytimes.com/2016/07/12/for-coffee-drinker...