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Can confirm - coffee sensitive. If I have a coffee at 11am, my heart rate will rise to 110 and stay there until I go to bed, before slowly declining overnight.

Discovered the gene thanks to consumer genetic testing, and the heart rate thing with a fitbit. I'm more careful these days.

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What about decaf?

That's what I do personally, I only consume decaf (and maybe once a month I'll dare drinking coffee and regret it after). People make fun of me, but I like the taste of coffee and I don't want to have a heart attack from drinking it :)

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