I've been doing my own personal experiments on myself trying to reduce caffeine intake to help with stress and anxiety. I've felt much better with just a small cutting back of my caffeine intake by taking my "main" cup of coffee (12oz cup) in the morning like I usually do and then just drinking 1/3 caffeinated, 2/3 decaf the rest of the day and going full decaf after 2pm if I have any at all.
I used to drink minimum 36oz (~150mg of caffeine per cup) of coffee per day and it was just turning me into an absolute wreck and just cutting back that little bit has made a huge difference. So instead of 450mg of caffeine, I'm getting ~270mg, so just a little above half the intake and it's made a huge difference.
A-fib just seemed like a natural consequence of the "caffeine peak" and reducing my consumption helped quite a bit.
Note that study suggests that coffee consumption decreases arrhythmia. (The title is horribly confusing, I know.)
From a quick skim, the protocol seemed to be “advise the patient to drink at least one cup of coffee per day or continue drinking your usual amount.” So it seems the results don’t track with your experience (or my own experience of improved stress and happiness when I cut down on coffee) which is why I think it’s surprising / possibly a fluke.
I used to drink minimum 36oz (~150mg of caffeine per cup) of coffee per day and it was just turning me into an absolute wreck and just cutting back that little bit has made a huge difference. So instead of 450mg of caffeine, I'm getting ~270mg, so just a little above half the intake and it's made a huge difference.
A-fib just seemed like a natural consequence of the "caffeine peak" and reducing my consumption helped quite a bit.