Mortality from heart disease, winter effect

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Discussion Overview

The discussion centers around the phenomenon of increased mortality from heart disease during winter months, particularly around the Winter Solstice and Christmas. Participants explore potential causes, including environmental factors, lifestyle changes during the holidays, and seasonal variations in cardiovascular disease.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant notes a spike in heart disease mortality around the Winter Solstice and Christmas, suggesting a link to obesity and diabetes.
  • Another recalls a similar pattern discussed in relation to Covid, indicating a potential connection between seasonal factors and health outcomes.
  • A hypothesis is proposed regarding holiday sudden cardiac death, linking it to food and alcohol inhibiting certain enzymes.
  • It is mentioned that January is the worst month for heart-related deaths, particularly between 6 am and 12 noon, with cold weather, respiratory infections, and air pollution suggested as contributing factors.
  • A scientific review paper is referenced, highlighting seasonal variations in cardiovascular disease, noting that winter peaks in hospitalizations and mortality are common, and suggesting a complex interaction of individual susceptibility and environmental factors.

Areas of Agreement / Disagreement

Participants express various hypotheses and observations regarding the winter effect on heart disease mortality, but no consensus is reached on specific causes or mechanisms. Multiple competing views and factors are presented without resolution.

Contextual Notes

Participants acknowledge several potential factors influencing heart disease mortality, including environmental conditions, lifestyle changes, and biological responses, but the discussion remains open-ended regarding their relative importance and interactions.

Astronuc
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I came across one article, and I've been looking for similar articles for other nations or groups, e.g., EU. Mortality from heart disease apparently spikes around Winter Solstice and Christmas (end of the calendar year), as well as other causes, which may be related, e.g., obesity and diabetes.

https://www.healthquest.org/hq/huds...dium=boost&utm_content=holiday_heart_syndrome

EU - https://www.euro.who.int/en/health-...s/cardiovascular-diseases/data-and-statistics
 
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I remember seeing that pattern in a thread recently on PF, I think about Covid but I'm not sure. I'll try to do a search...
 
Apparently the worst month is january, the worst time being 6am till 12 noon, the usual explanation is that cold weather increases the hearts work rate, increases blood pressure and may predispose people to blood clots. There are other possible factors, certainly respiratory virus infections can increase risk and air pollution has a seasonal impact. Low vitamin D and changes in diet, increasing blood fats could also be factors.
 
Here's a scientific review paper on the subject published in the journal Nature Reviews Cardiology:

Seasonal variations in cardiovascular disease
https://www.nature.com/articles/nrcardio.2017.76

Key Points
  • Seasonal variations across a broad range of populations and climates (but predominantly derived from the temperate climates of Europe) have been documented in all types of cardiovascular disease (CVD)
  • Most studies report 'winter peaks' in CVD-related hospitalizations and mortality; event rates in winter are typically 10–20% greater than during 'summer troughs'
  • CVD seasonality is probably caused by a complex interaction between the susceptibility of individuals and a range of environmental factors (including ambient temperature)
  • CVD seasonality is most pronounced in individuals living in milder climates, who are least prepared for extreme weather variations
  • A lag effect, potentially modulated by air pollution levels and concurrent influenza, has been documented after 'cold snaps'
  • Potential exists to attenuate seasonality in CVD via multifaceted interventions that modulate exposure to various provocations to the cardiovascular system in high-risk individuals (those with established CVD)
 
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