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Blood pressure among the Inuit (Eskimo) populations in the Arctic

National Institute of Public Health, Copenhagen, Denmark, p.bjerregaard{at}dadlnet.dk

Eric Dewailly

Public Health Research Unit, CHUL Research Center, Centre Hospitalier Universitaire de Québec, Québec, Canada, Department of Social and Preventive Medicine, Laval University, Québec, Canada

T. Kue Young

Department of Public Health Sciences, University of Toronto, Toronto, Canada

Carole Blanchet

Public Health Research Unit, CHUL Research Center, Centre Hospitalier Universitaire de Québec, Québec, Canada

Robert A. Hegele

Robarts Research Institute, London, Canada

Sven E. O. Ebbesson

Alaska Siberia Medical Research Program

Patricia M. Risica

Alaska Siberia Medical Research Program, Brown University, Providence, Rhode Island, USA

Gert Mulvad

Primary Health Clinic, Nuuk, Greenland

Aims: Studies of blood pressure among various Inuit (Eskimo) populations in the Arctic have given inconsistent results. Most studies reported lower blood pressure among the Inuit as compared with the predominantly white national populations. This has been attributed to traditional subsistence practices and lifestyle. This study compared the blood pressure among the major Inuit population groups with other populations and examined the associations with factors like age, gender, obesity and smoking. Methods: The study comprised four Inuit populations from Alaska, Canada, and Greenland with participation rates ranging from 51% to 73%. In a cross-sectional design, 2,509 randomly selected adults from 31 villages were examined. Blood pressure, anthropometric measurements, smoking, and medication were recorded. Results: Mean systolic blood pressures ranged from 116 to 124 mm Hg among men and 110 to 118 among women in the four populations. Mean diastolic blood pressures ranged from 75 to 78 mm Hg among men and from 71 to 73 among women. Systolic blood pressure increased with age. Male gender, obesity, being a non-smoker, and being on anti-hypertensive treatment were associated with high systolic and diastolic blood pressure. Adjusted for age, body mass index, smoking, and anti-hypertensive treatment, blood pressure differed among the populations (p0.001). Mean systolic blood pressure was low among the Inuit compared with most European populations of the INTERSALT study, but higher than in several Asian populations and the Amazonian Indians. Conclusions: Inuit blood pressures rank intermediate on a global scale but low in comparison with most European populations. The Inuit population is not homogeneous, and this is reflected in blood pressure differences among the four regional subgroups. The role of the traditional diet, a rural lifestyle with a low level of psychosocial stress, and genetics must be further explored.

Key Words: Alaska • blood pressure • Canada • Greenland • Inuit • obesity • smoking.

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				P. Bjerregaard, T. Kue Young, E. Dewailly, and S. O.E. Ebbesson Review Article: Indigenous health in the Arctic: an overview of the circumpolar Inuit population Scand J Public Health, October 1, 2004; 32(5): 390 - 395. [Abstract] [PDF]