does alcohol or cigarettes kill more people Even a Little Can Harm Your Health, Research Shows what kills more people cigarettes

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This strategy, plus picking the right brands, helps regular smokers cut down their tobacco costs while enjoying their usual smoke

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Other processes involved with lung damage include oxidative stress produced by high concentrations of free radicals in tobacco smoke and released by inflammatory cells and breakdown of the connective tissue of the lungs by proteases (particularly elastase) that are insufficiently inhibited by protease inhibitors

Indeed, there is research that shows how nicotine does improve attentional functioning in people with ADHD