A 31-year-old member asked:
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how does tobacco smoke affect the immune system?

1 doctor answer
Dr. Alan Wartenberg
A Verified Doctor answered
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Not fully understood: but it is clear that the activity of autoimmune diseases, like ulcerative colitis, psoriasis and several others appear to be reduced in smokers. Nobody is sure whether it is only the nicotine or other elements in the smoke as well, but nicotine has known immunomodulating effects, reducing activity of several immune cells. Other smoke elements may affect local immunity in the air passages and lung
Answered on Jul 7, 2014
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