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New study shows smoking increases risk of psoriasis 

Researchers have found that smoking increases the risk of developing psoriasis, heavier smoking increases the risk further, and the risk decreases only slowly after quitting. Investigators from the Massachusetts General Hospital, Brigham and Women's Hospital, the Harvard School of Public Health, all in Boston, USA, and Vancouver General Hospital, Vancouver, BC, Canada, have published the results in the November 2007 issue of The American Journal of Medicine. . . .

The study is "Smoking and the Risk of Psoriasis in Women: Nurses' Health Study II" by Arathi R. Setty, MD, MPH, Gary Curhan, MD, ScD, and Hyon K. Choi, MD, DrPH.

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