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Drinking water sodium and blood pressure: A cautious view of the 'second look'

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  • Willett, W.C.

Abstract

Overall knowledge strongly suggests that large changes in sodium intake (e.g., several grams per day) do have an effect on blood pressure in at least some individuals, and it is therefore probable that even the relatively small increments in sodium intake attributable to certain water supplies have some effect on blood pressure. However, the studies of Tuthill and Calabrese provide little evidence relating to the magnitude of such an effect. Differences in blood pressure attributable to drinking water sodium are likely to be substantially less than the observed differences between the two communities they have studied, and may be undetectable by epidemiologic methods. However, their report serves an important function by focusing attention on our ignorance regarding the dose-response relation of sodium intake to blood pressures of children and normotensive adults. This clearly deserves further study because of the large amounts of sodium added to our food, both by individuals and commercial food processors.

Suggested Citation

  • Willett, W.C., 1981. "Drinking water sodium and blood pressure: A cautious view of the 'second look'," American Journal of Public Health, American Public Health Association, vol. 71(7), pages 729-732.
    • Handle: RePEc:aph:ajpbhl:10.2105/ajph.71.7.729_9
    DOI: 10.2105/AJPH.71.7.729
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