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The heart and the cold.

I Vuori1

  • 1Urho Kaleva Kekkonen Institute for Health Promotion Research, Tampere, Finland.

Annals of Clinical Research
|January 1, 1987
PubMed
Summary

Cold weather significantly increases the risk of cardiovascular events, particularly coronary heart disease. This review explores the epidemiological evidence and contributing factors behind this seasonal health risk.

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Area of Science:

  • Environmental Health
  • Cardiovascular Epidemiology
  • Public Health

Background:

  • Cold environments are linked to increased cardiovascular disease (CVD) events.
  • Epidemiological studies show seasonal peaks in coronary heart disease (CHD) morbidity and mortality during colder months.
  • A negative correlation exists between air temperature and the incidence of CHD.

Purpose of the Study:

  • To review current epidemiological evidence on the link between cold environments and cardiovascular health.
  • To examine potential factors explaining the observed increase in cardiovascular events during cold seasons.
  • To differentiate between apparent, indirect, and causative roles of cold in CVD.

Main Methods:

  • Review of epidemiological studies and existing literature.
  • Analysis of correlations between environmental temperature and cardiovascular event occurrence.
  • Examination of physiological and behavioral factors associated with cold exposure.

Main Results:

  • Consistent seasonal peaks in coronary morbidity and mortality during cold periods.
  • Strong negative correlation between ambient temperature and CHD incidence.
  • Identified direct physiological effects of cold on myocardial oxygen demand and supply.
  • Highlighted indirect effects including behavioral changes and socioeconomic factors.

Conclusions:

  • Cold environments demonstrably contribute to increased cardiovascular morbidity and mortality, especially coronary heart disease.
  • Both direct physiological impacts (e.g., increased oxygen demand, vasoconstriction) and indirect factors (e.g., lifestyle changes, socioeconomic conditions) play a role.
  • Cold exposure poses a significant risk factor for cardiovascular events, necessitating public health awareness and preventive strategies.

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