Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/7/2025

Seasonal Cardiovascular Risks and Cold Exposure

Cardiovascular Vulnerability

  • Winter periods are associated with increased heart failure hospitalizations, particularly in elderly patients, due to skin cooling-induced vascular resistance and plasma noradrenaline elevation, according to the Nature Reviews Cardiology 1
  • The Christmas winter period shows the highest rates of excess cardiovascular deaths, as reported by the Nature Reviews Cardiology 1
  • Patients with heart failure show seasonal vulnerability to cold exposure through neurohumoral activation and hemodynamic stress, as noted by the Nature Reviews Cardiology 1
  • Cold-induced vascular resistance increases can precipitate heart failure decompensation, according to the Nature Reviews Cardiology 1
  • Elderly individuals demonstrate more prominent effects of seasonal temperature variability on health, as reported by the Nature Reviews Cardiology 1
  • Winter hospitalization in the elderly population is associated with both poorer short-term and long-term prognosis, according to the Nature Reviews Cardiology 1
  • Elderly individuals with multiple comorbidities should avoid cold water immersion due to increased risk of cardiovascular events, as stated by the Nature Reviews Cardiology 1
  • Known cardiovascular disease, uncontrolled hypertension, and recent cardiovascular events are absolute contraindications for cold water immersion, as noted by the Nature Reviews Cardiology 1