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Related Experiment Videos

Chronic obstructive pulmonary disease in Japan.

Takateru Izumi1

  • 1Kyoto University, Kyoto, Japan. takateru@ca3.so-net.ne.jp

Current Opinion in Pulmonary Medicine
|February 15, 2002
PubMed
Summary

Chronic obstructive pulmonary disease (COPD) recognition lagged in Japan due to fewer smoking-related cases initially. Despite falling smoking rates, COPD mortality continues to rise, reflecting past consumption patterns.

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Area of Science:

  • Pulmonology
  • Epidemiology
  • Public Health

Background:

  • The term chronic obstructive pulmonary disease (COPD) and its classification as a tobacco-related disease have been adopted in Japan more recently compared to Western countries.
  • COPD was not included in Japanese government statistics until 1995, indicating a significant lag in its official recognition.
  • A primary factor for this delay was the historically lower incidence of smoking-related COPD cases in Japan.

Purpose of the Study:

  • To examine the historical trends and epidemiological characteristics of chronic obstructive pulmonary disease (COPD) in Japan.
  • To understand the relationship between cigarette consumption patterns and COPD mortality in Japan.
  • To compare the prevalence and medical expenditure of COPD in Japan with Western countries.

Main Methods:

  • Analysis of Japanese government statistics on disease classification and mortality.
  • Examination of historical cigarette consumption data in Japan.
  • Comparison of COPD patient numbers and medical costs between Japan and Western nations.

Main Results:

  • Cigarette consumption in Japan surged during periods of rapid economic growth (1955-1974).
  • COPD (emphysema) mortality began increasing around 1980 and continues to rise, even after smoking rates stabilized post-1995.
  • The number of COPD patients and associated medical expenditures in Japan remain lower than in Western countries.

Conclusions:

  • Japan's recognition and statistical tracking of COPD lagged significantly behind Western countries.
  • Past increases in cigarette consumption have a continuing impact on COPD mortality rates in Japan.
  • While rising, COPD burden in Japan is currently less pronounced than in Western nations.

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