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Related Experiment Videos

Seasons, temperature and coronary disease

F Enquselassie1, A J Dobson, H M Alexander

  • 1Department of Community Health, Addis Ababa University, Ethiopia.

International Journal of Epidemiology
|August 1, 1993
PubMed
Summary

Seasonal weather patterns, particularly cold temperatures in winter and spring, significantly increase the risk of fatal and non-fatal coronary events. Managing temperature exposure may reduce peak heart attack occurrences.

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Area of Science:

  • Cardiovascular epidemiology
  • Environmental health
  • Public health

Background:

  • Heart disease remains a leading cause of mortality globally.
  • Seasonal variations in cardiovascular events have been observed, but the specific impact of daily weather conditions requires further investigation.

Purpose of the Study:

  • To investigate the association between daily temperature, rainfall, and seasonal factors with fatal and non-fatal coronary events.
  • To determine if weather conditions influence the timing of coronary deaths.

Main Methods:

  • Utilized data from the WHO MONICA Project, a community-based heart disease register in Australia.
  • Employed statistical models to analyze the relationship between daily weather variables (temperature, rainfall) and coronary events, accounting for seasonal effects.

Main Results:

  • Fatal and non-fatal coronary events were 20-40% more likely during winter and spring compared to other seasons.
  • Coronary deaths were associated with days of low temperature and, to a lesser extent, high temperature.
  • No significant differences were observed in the weather associations for sudden versus non-sudden cardiac deaths.

Conclusions:

  • Both long-term seasonal patterns and daily temperature fluctuations contribute to the incidence of coronary events.
  • Reducing exposure to temperature extremes may help mitigate the seasonal peaks in heart attacks and improve cardiovascular outcomes.

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