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Global Impact of Chronic Diseases

Mar 11, 2025

Thursday Class: Chronic Disease Discussion

Overview

  • Focus on chronic disease and its global impact.
  • Class divided into four modules:
    • Understanding the determinants of health related to chronic diseases.
    • Exploring causes of chronic diseases leading to innovations and ethical issues in public health.

Global Importance of Chronic Diseases

  • Chronic diseases have a significant impact globally.
  • Comparison with communicable diseases discussed in previous lectures.

Leading Causes of Death Globally

  • Top chronic diseases:
    • Ischemic heart disease
    • Stroke
    • COPD
  • Communicable diseases:
    • Lower respiratory infections
    • Neonatal conditions
  • Other chronic diseases: lung cancer, Alzheimer's, diabetes, kidney disease.

Trends from 2000 to 2019

  • Chronic diseases are increasing in importance globally.
  • Decrease in the importance of infectious diseases.
  • Socioeconomic discrepancy:
    • High-income countries: Chronic diseases predominate.
    • Low-middle-income countries: Infectious diseases predominate but decreasing.

Chronic Diseases in High and Low-Middle Income Countries

  • Chronic diseases remain a leading cause of death globally.
  • Rise in importance in both developing and developed countries.
  • Exceptions: Ischemic heart disease and stroke have seen slower growth in high-income countries.

Specific Country Data: Canada and USA

  • Canada (2020):
    • Leading causes of death are chronic diseases.
    • Significant presence of COVID-19, influenza, and accidents.
  • USA (2020-2022):
    • Chronic diseases like heart disease and cancer at the top.
    • COVID-19 was the third leading cause of death in 2020, remaining in top 10 by 2022.

Summary

  • Chronic diseases are a major cause of death globally and are increasing in importance.
  • Shift from infectious to chronic diseases as countries develop economically.
  • Upcoming modules will focus on risk factors for chronic diseases.

Next Steps

  • Continue with modules focusing on risk factors for chronic diseases in subsequent lectures.