Chocolate intake once a month or more is linked to a reduced Afib risk, with increasing risk reductions with increasing intake up to 2-6 servings a week.  Research has consistently indicated a cardiovascular benefit of chocolate consumption, but the 2 studies addressing Afib risk had mixed results. A Cochrane review has found BP-lowering effects of chocolate, with greater effects in people with higher baseline BP.  Another prospective study associated moderate chocolate intake with reduced myocardial infarction and ischemic heart disease risk. This study was done to evaluate the association between chocolate intake and incident clinically apparent atrial fibrillation or flutter (AF).  The Danish Diet, Cancer, and Health Study is a large population-based prospective cohort study. The present study is based on 55 502 participants (26 400 men and 29 102 women) aged 50–64 years who had provided information on chocolate intake at baseline. Incident cases of AF were ascertained by linkage with nationwide registries.  During a median of 13.5 years there were 3346 cases of AF. Compared with chocolate intake less than once per month, the rate of AF was lower for people consuming 1–3 servings/month, 1 serving/week, 2–6 servings/week and ≥1 servings/day, with similar results for men and women. From the results it was concluded that, accumulating evidence indicates that moderate chocolate intake may be inversely associated with AF risk.   http://dx.doi.org/10.1136/heartjnl-2016-310357