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Migration-induced changes in blood pressure: a controlled longitudinal study.

N R Poulter·K T Khaw·M Mugambi·W S Peart·P S Sever
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Abstract

A longitudinal study of the effects of migration on blood pressure and related factors is being carried out in members of a black Kenyan population who migrate from a traditional rural community to an urban environment. Data on the first 139 migrants (78 male, 61 female) and 204 control non-migrants (126 male, 78 female) who have been followed up for a period of 6 months are presented. Blood pressure changes rapidly on migration (within the first 2 months); thereafter trends between migrants and controls differ. Significant differences in systolic pressure between migrants and controls are found at all examinations during the 6 month follow-up in both sexes. Diastolic pressure falls in controls but rises in migrants, the greatest difference being seen at the 6 month examination. Migration is associated with a marked increase in dietary sodium and a fall in potassium demonstrated by measurements of urinary electrolyte excretion in 3 X 12 h or 3 X 24 h urine collections. Analysis of covariance shows that the blood pressure differences between migrants and controls are partly explained by urinary sodium/potassium ratios and in some instances by body weight.

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Blood PressureBody WeightDietFemaleHumansKenyaLongitudinal StudiesMalePotassiumSodiumTransients and MigrantsJournal ArticleResearch Support, Non-U.S. Gov't

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N R Poulter, K T Khaw, M Mugambi, W S Peart, P S Sever. Migration-induced changes in blood pressure: a controlled longitudinal study.. https://doi.org/10.1111/j.1440-1681.1985.tb02633.x

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