what happens if you smoke one cigarette Many people think smoking only on the weekends or at parties is harmless, but doctors warn there is no safe amount of tobacco. Find out how even occasional smoking damages your heart Every cigarette you smoke quietly

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Risky sellers operate through social media-only pages, offer unreal discounts, have no proper website, and provide no return policy

Japan Tobacco set to acquire Reynolds American unit for $5bn Japan Tobacco is in final rounds of talks to buy Reynolds American subsidiary Santa Fe Natural Tobacco for about $5bn (3.29bn, 4.45bn)

Lauren, 27, Leeds: A book by Marie Kondo helped me kick my hoarding habit I had brought a boyfriend back to my flat and he accidentally opened the door to my hoarding cupboard and got a shock

Comparison between smoking-related DNA adduct analysis in induced sputum and peripheral blood lymphocytes