European Journal of Epidemiology

, Volume 21, Issue 7, pp 485–491 | Cite as

Associations between environmental exposure and blood pressure among participants in the Oslo Health Study (HUBRO)

Cardiovascular Diseases

Abstract

Background

It is well known that environmental conditions are related to the risk of developing cardiovascular diseases and events. However, the mechanisms behind these relations are␣not well understood. One mechanism could be elevation of blood pressure. In this study we assessed associations between blood pressure and environmental conditions among citizens in Oslo, Norway.

Materials and methods

We used the Oslo Health Study (HUBRO), a population based study of 18,770 Oslo citizens, to assess associations between blood pressure and environmental conditions including season, smoking, outdoor temperature and air pollution.

Results

Blood pressure was higher in the winter season, but the association disappeared when we adjusted for temperature. A 10 °C reduction in outdoor temperature, the day blood pressure was measured was related to an increase in blood pressure for both men [SBP: 1.5 mmHg (95% CI, 0.6–2.3); DBP: 1.3 mmHg (95% CI, 0.1–1.8)] and women [SBP: 2.4 mmHg (95% CI, 1.6–3.2); DBP: 1.8 mmHg (95% CI, 1.3–2.3)]. No convincing relation was found between indicators of air pollution exposure and blood pressure.

Conclusion

Several environmental conditions were related to blood pressure, and have similar associations with cardiovascular diseases or mortality. This could indicate that some of the effect these exposures have on the cardiovascular system is by increasing blood pressure.

Keywords

Air pollution Blood pressure Cardiovascular disease Environmental exposure Season Temperature 

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Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  1. 1.Division of EpidemiologyNorwegian Institute of Public HealthOsloNorway
  2. 2.Department of General Practice and Community Medicine, Medical FacultyUniversity of OsloOsloNorway

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