tocacco plant Native American Tobaccoo flower, leaves, and buds

tocacco Tobacco is an annual or bi-annual growing 1-3 meters tall with large sticky leaves that contain nicotine. Native to the Americas, tobacco has a long history of use as a shamanic inebriant and stimulant. It is extremely popular and well-known for its addictive potential.

tocacco nicotina Nicotiana tabacum

tocacco Nicotiana rustica leaves. Nicotiana rustica leaves have a nicotine content as high as 9%, whereas Nicotiana tabacum (common tobacco) leaves contain about 1 to 3%

tocacco cigar A cigar is a tightly rolled bundle of dried and fermented tobacco which is ignited so that its smoke may be drawn into the mouth. Cigar tobacco is grown in significant quantities in Brazil, Cameroon, Cuba, Dominican Republic, Honduras, Indonesia, Mexico, Nicaragua, Sumatra, Philippines, and the Eastern United States.

tocacco Tobacco is an agricultural product processed from the fresh leaves of plants in the genus Nicotiana. It can be consumed, used as an organic pesticide, and in the form of nicotine tartrate it is used in some medicines. In consumption it may be in the form of cheap cigarettes smoking, snuffing, chewing, dipping tobacco, or snus.

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RESEARCH: Effect of Passive Household Smoking Exposure

Objective: To investigate the relation between household passive smoking exposure and risk of ischaemic heart disease (IHD) among female never-smoke patients by a retrospective case-control analysis.

Methods: This study recruited 314 patients with IHD who had never smoked and 319 controls who were admitted for other reasons in the same hospital during the same period. Subjects were interviewed about their exposure to household passive smoking. The dose metrics of passive smoking exposure were evaluated by using “pack-years” and “hour-years”, which indicated the cumulative amount and duration of exposure. The Odds ratios (OR) and 95% confidence intervals (CI) were computed by unconditional logistic regression, adjusted for other risk factors.

Results: Subjects with passive smoking exposure were associated with higher risk of IHD (OR=1.51, 95% CI: 1.01-2.27, P=0.043) when compared to non-exposed subjects. Subjects exposed to an average of ≥1 pack of cigarette per day had an OR of 1.69 (95% CI: 1.07-2.68, P=0.025). The OR was 1.52 for those exposed for ≥5 years (95% CI: 1.01-2.29, P=0.043) and was 1.82 for those exposed ≥4 hours per day (95% CI: 1.05-3.15, P=0.032). Similarly, the risk of IHD increased with cumulative exposure duration, with an OR of 1.53 (95%CI: 1.01-2.32, P=0.043) at the exposure level ≥5 pack-years, and an OR of 1.61 (95%CI: 1.03-2.52, P=0.037) at the exposure level ≥20 hour-years. There was a significant dose-response association between the exposure measures and risk of IHD (P<0.01 for trend).

Conclusion: Our data suggested an increased risk of IHD from passive household smoking in female never-smoke subjects, and demonstrated a dose-response association.

Source: Tobaccocontrol

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