http://www.mdlinx.com/internal-medicine/newsl-article.cfm/5372608/ZZF307965849E94474BB34FC062CEC0F93/?
The authors assessed the effect of these diets on the incidence of atrial fibrillation in the PREDIMED trial. In the absence of proven interventions for the primary prevention of atrial fibrillation, this post hoc analysis of the PREDIMED trial suggests that extravirgin olive oil in the context of a Mediterranean dietary pattern may reduce the risk of atrial fibrillation.
Methods
- Participants were randomly assigned to 1 of 3 diets: Mediterranean diet supplemented with extravirgin olive oil, Mediterranean diet supplemented with mixed nuts, or advice to follow a low-fat diet (control group).
- Incident atrial fibrillation was adjudicated during follow-up by an events committee blinded to dietary group allocation.
- Among 6705 participants without prevalent atrial fibrillation at randomization, they observed 72 new cases of atrial fibrillation in the Mediterranean diet with extravirgin olive oil group, 82 in the Mediterranean diet with mixed nuts group, and 92 in the control group after median follow-up of 4.7 years.
- The Mediterranean diet with extravirgin olive oil significantly reduced the risk of atrial fibrillation (hazard ratio, 0.62; 95% confidence interval, 0.45–0.85 compared with the control group).
- No effect was found for the Mediterranean diet with nuts (hazard ratio, 0.89; 95% confidence interval, 0.65–1.20).
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