I drink it for fatigue and for the prevention of dementia. But this is a meta analysis so don't put a lot of stock in it.
More Caffeine May Lower Afib Risk
In pooled results from studies with adjustment for potential
confounders, the risk of atrial fibrillation was lower with consumption
of both low doses of caffeine (RR 0.89, 95% CI 0.80-0.99) and high doses
(RR 0.84, 95% CI 0.75-0.94), according to Dongfeng Gu, MD, PhD, of Fu
Wai Hospital in Beijing, and colleagues.
In a dose-response
analysis, the risk of incident atrial fibrillation was lower by a
relative 6% for each increase in habitual caffeine intake of 300 mg/day
(RR 0.94, 95% CI 0.90-0.99), they reported online in the Canadian Journal of Cardiology.
More at link.
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