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Cigarette smoking and peripheral blood leukocyte differentials
1Environmental Protection Aency, Washington, DC.
Annals of Epidemiology
|May 1, 1994
Summary
Cigarette smoking significantly impacts white blood cell counts, altering neutrophil, lymphocyte, monocyte, and eosinophil levels. Current smoking behavior is a key factor, though past smoking also shows lasting effects on these cell differentials.
Area of Science:
- Hematology
- Public Health
- Epidemiology
Background:
- Cigarette smoking is known to elevate total leukocyte count.
- Its specific impact on differential white blood cell counts remains under-researched.
Purpose of the Study:
- To investigate the relationship between smoking status and differential blood cell counts.
- To analyze the influence of smoking intensity, duration, and cessation on leukocyte subsets.
Main Methods:
- Analysis of data from 6138 adults (30-74 years) from the First National Health and Nutrition Examination Survey (1971-1974).
- Multiple regression models adjusted for age, race, sex, and obesity.
- Assessment of absolute and percentage counts for neutrophils, eosinophils, lymphocytes, and monocytes.
Main Results:
- Smoking pack-years and cessation duration predicted absolute neutrophil and lymphocyte counts.
- Current daily cigarette consumption predicted absolute monocyte and eosinophil counts.
- Smoking influenced the percentage of neutrophils (increased) and lymphocytes/eosinophils (decreased), with current behavior being most impactful.
Conclusions:
- Cigarette smoking affects differential leukocyte counts in a non-uniform manner.
- Current smoking habits are the primary driver, but past smoking history also has persistent effects.