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http://www.ncbi.nlm.nih.gov/entrez/query.f...l=pubmed_docsum

Background Previous studies on the association between smoking and acne have reported conflicting results. Objective To investigate the association between smoking and acne among school-going adolescents. Methods A cross-sectional study was conducted. Smoking was defined as smoking > 3 cigarettes daily for 6 months or more. We defined acne as having > 20 retentional and/or inflammatory facial acne lesions. Multivariate (proportional) logistic regression models were used to adjust for confounding variables. Results Of the 594 participants, 36.2% had acne. Acne sufferers were less likely to smoke (18.1 vs. 23.7%, P = 0.10). In girls, smoking was significantly associated with lower prevalence of acne (adjusted OR = 0.41, 95% CI = 0.13, 0.82). Smoking, daily cigarette consumption and duration of smoking appeared to be protective in the development of inflammatory acne in girls. No significant associations between acne and smoking variables were detected among boys. Limitations: although this study suggests a significant negative association between smoking and inflammatory acne in girls, it does not prove causality. This association did show a trend for linear relationship. Because of the unexpected differences between boys and girls, sample size may have affected our results. Conclusion The anti-inflammatory effects of smoking may inhibit the development of papulopustular acne in girls more than in boys. However, smoking should not be considered a therapeutic option for acne. Additional studies that consider possible differences across age, gender and type of acne are needed to clarify the association between smoking and acne.

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http://www.ncbi.nlm.nih.gov/entrez/query.f...l=pubmed_docsum

Background Previous studies on the association between smoking and acne have reported conflicting results. Objective To investigate the association between smoking and acne among school-going adolescents. Methods A cross-sectional study was conducted. Smoking was defined as smoking > 3 cigarettes daily for 6 months or more. We defined acne as having > 20 retentional and/or inflammatory facial acne lesions. Multivariate (proportional) logistic regression models were used to adjust for confounding variables. Results Of the 594 participants, 36.2% had acne. Acne sufferers were less likely to smoke (18.1 vs. 23.7%, P = 0.10). In girls, smoking was significantly associated with lower prevalence of acne (adjusted OR = 0.41, 95% CI = 0.13, 0.82). Smoking, daily cigarette consumption and duration of smoking appeared to be protective in the development of inflammatory acne in girls. No significant associations between acne and smoking variables were detected among boys. Limitations: although this study suggests a significant negative association between smoking and inflammatory acne in girls, it does not prove causality. This association did show a trend for linear relationship. Because of the unexpected differences between boys and girls, sample size may have affected our results. Conclusion The anti-inflammatory effects of smoking may inhibit the development of papulopustular acne in girls more than in boys. However, smoking should not be considered a therapeutic option for acne. Additional studies that consider possible differences across age, gender and type of acne are needed to clarify the association between smoking and acne.

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In my opinion smoking increases acne . I used to smoke (about 10 a day) and found that after quitting the acne improved greatly. Gained a bit of weight with the need to feed but would rather that than be skinny and spotty!

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It would make sense to me that smoking would make acne worse, how could it not clog your pores? BUT smoking tends to dry out your skin, which removes one factor that can contribute to acne. And despite nicotine being a stimulant, it can calm you down. Shit, that's WHY people smoke. And stress may contribute to acne, possibly because it increases sebum production. Here's the thing, why does it only work for girls? That study didn't have any conclusive results, it may have been a fluke. I just thought it was interesting.

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All I know is that smoking turns your lungs black, blood flows from your heart to your lungs, exchanges gases and then pumps through your body. It has to leave something in the skin.

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Screw that shit, I've been smoking since 15... past 4-5 years now, acne does not clear up because of smoking. I use to smoke a pack a day 2 years ago and i still had acne... cut down, still had acne... trying to quit and still have acne lol

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