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Research: DALLONGEVILLE and colleagues,
Listed in Issue 96
Abstract
DALLONGEVILLE and colleagues, INSERM U 508, Institut Pasteur de Lille, 1 Rue du Pr Calmette, 59019 Lille Cedex, France, jean.dalongeville@pasteur-lille.fr, have found that fish consumption is associated with lower heart rates.
Background
Fish consumption decreases the risk of sudden death. The object of this study was to examine the association between fish consumption and heart rate.
Methodology
A cross-sectional analysis was conducted among 9758 men between 50 and 59 years without coronary heart disease. Heart rate and coronary heart disease risk factors were compared across 4 categories of fish consumption: less than once a week (2663 subjects), once a week (4576 subjects), twice a week (1964 subjects) and more than twice a week (556 subjects). Fatty acid profiles of red blood cell membranes were measured in a random subsample of 407 subjects.
Results
In the red blood cell membranes, eicosapentaenoic acid, docosapentaenoic acid and total n-3 fatty acids increased with increasing fish consumption in a highly significant manner. Triglycerids, systolic blood pressure and diastolic blood pressure were lower and HDL cholesterol levels were higher in fish consumers than in nonconsumers. Heart rate decreased across the categories of fish intake (p = 0.0001). After adjusting for age, location, education, physical activity, smoking, alcohol consumption, body mass index, and antiarrhythmic medication, heart rates were still significantly lower among fish consumers than nonconsumers. Docosahexaenoic acid content of red cell membranes was inversely associated with heart rate.
Conclusion
Fish consumption is associated with decreased heart rates. Because heart rate is positively associated with the risk of sudden death, this association may explain in part the lower risk of sudden death in fish eaters.
References
Dallongeville J, Yarnell J, Ducimetiere P, Arveiler D, Ferrieres J, Montaye M, Luc G, Evans A, Bingham A, Hass B, Ruidavets JB, Amouyel P. Fish consumption is associated with lower hart rates. Circulation 108 (7): 820-825, Aug 2003.
