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Cigarette smoking risks:Bjartveit K, Tverdal A. Health consequences
of smoking 1-4 cigarettes per day
Tobacco
Control 2005; 14: 315-20, based on followup
of 43,000 Norwegians from 1970s to 2002.
Cigar smoking risks: Cigars, health effects and trends. Monograph 9, National
Cancer Institute USA, 1998,
based on follow-up of 1
million US subjects for 12 years, including 22,000 cigar smokers,
in Cancer Prevention Study I, 1959-72, normalized to the Bjartveit estimates for cigarette smoking
risks, using the cigar to cigarette smoking risk ratios in CPI I.
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Second hand smoke risk: Hill S, Blakely T, Kawachi I,
Woodward A. BMJ 2004 988-89 (24 April). Based on fate of never
smokers whether living with a smoker or not in 1996 NZ census.
Risks of snus Levy DT et al. Cancer Epidemiology, Biomarkers and
Prevention 2004; 13: 2035-42.
Risks of nicotine gum. Murray RP, et al. Safety of nicotine polacrilex
gum used by 3094 participants in the Lung Health Study. Chest 1996;
109: 438-45. Followed for 5 years, compared with 1900 controls. No
increase in hospitalization or mortality in the nicotine gum
chewers.
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