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Adolescents who were abused and neglected have less gray matter in some areas of the brain than young people who have not been maltreated, a new Yale School of Medicine study shows. The brain areas impacted by maltreatment may differ between boys and ...
Despite perceptions that additive-free cigarettes and the hand-rolled cigarettes from India called bidis may provide a less-toxic smoke than conventional cigarettes, new research suggests the opposite may be true. For the study, researchers asked 10 volunteers to smoke an unfiltered, additive-free American Spirit cigarette, a strawberry-flavored bidi, a non-flavored bidi and one of the participants' own preferred brands of conventional cigarette. Results showed that two minutes after smoking the unfiltered, additive-free American Spirit cigarette or either type of bidi, participants' plasma nicotine levels were significantly higher than when they smoked their own cigarettes. The high nicotine levels lasted longest with the American Spirit cigarette. Study results are published in the December issue of Nicotine & Tobacco Research.