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I find it hard to take articles around this seriously when they don't take into consideration the huge variability humans show in metabolising coffee and it's related health effects. A light introduction can be found here: https://well.blogs.nytimes.com/2016/07/12/for-coffee-drinker... A more in depth can be found: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4242593/ It's all about CYP1A2

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I'm the original author. I tried to make clear this was lessons learned from my personal experience. I see here a few people claiming caffeine does not affect them at all. I'll update the post to try to make clearer that I am personally affected by caffeine and maybe this does not apply to all people.

You make a good point. I've had my genome sampled by 23andMe, so I went back and looked at my report. I updated my post to point out that my results might not be the same as those for others.

Interesting, thanks for the comment, actually I started reading on this because of 23andMe as well and I'm on the opposite spectrum, which means coffee doesn't affect me much, the same can't be said of my partner who has like you also quit btw.

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