e cigarette device Chemical characterisation of the vapour emitted by an e-cigarette using a ceramic wick-based technology E Cigarette Vaporizer: Best Options

It was suggested that this was due to his heavy use of snuff

Health Risks of Cigar Smoking To be completely honest, there is no such thing as a completely safe way to consume tobacco

She points to a study published in the Journal of Neuroscience that found that even "light" pot smokers had changes in brain function in areas of motivation and emotion (the changes were just greater in those regions of the brain in people who smoked more heavily)

Social opportunities: creating anti-smoking norms and environments Participants identified a range of strategies to reduce adolescents social opportunities to smoke, centred around three key areas: banning staff smoking in schools, promoting non-smoking role models, and harnessing positive peer influence

PMID 8722431

CNN's Melissa Bell reports