Other risk factors

* Exposure to asbestos, a fibrous mineral used as insulation in homes and buildings, also increases the risk of lung cancer. In houses, this material is not dangerous as they are not broken or handled in the open air, which may be the case during the renovations.
* Wood stoves, if they are not waterproof, are sources of fine particles in the air of homes, particularly dust and ashes. Wood smoke contains over 7,000 toxic substances. NB In its natural form, talc may contain asbestos. However, Canadian law requires, since 1973, as consumer products containing talc (body powders, face and baby) are free of asbestos.
* Being frequently exposed to air pollution. The air pollution is responsible for 5% of all deaths from cancer of the trachea, bronchus and lungs. The particles from burning coal, oil, natural gas and the incineration of garbage are damage. The problem is especially crucial in countries poorer and densely populated, particularly in Asia, but relates to some degree, all major cities.

* Having a diet low in fruits and vegetables. Twenty studies (cohort or case-control) on eating habits show a slightly reduced risk among consumers of fruits and vegetables rich in beta-carotene (sweet potatoes, pumpkins, carrots, spinach and other green vegetables dark, winter squash, etc..). In general, consumption of fruit and vegetables exert a protective effect in people exposed to smoke tobacco.

Epidemiological studies indicate that consumed in supplement form (at a dose of 20 mg or more per day), beta-carotene slightly increases the risk of lung cancer and mortality among smokers. It is not known if this negative effect persists when the beta-carotene is used in combination with other carotenoids in supplements.

Potential risk factors

* Smoking marijuana. For now, the data tend to show that marijuana does not increase the risk of lung cancer. Smoke marijuana, or cannabis, although exempting nicotine, contains several carcinogens found in tobacco smoke. Researchers believe that tetrahydrocannabinol (THC) present in cannabis smoke’s effect. Marijuana smoke is often inhaled deeply and held longer in the lungs. Some data suggest that marijuana may cause oral cancer.
* Smoking the hookah (pipe eastern water pipe, hookah). The data are currently insufficient to determine the impact of this practice on the risk of lung cancer. The amount of tobacco smoke hookah is much lower than that found in cigarettes.Smoking the hookah is a tradition in North Africa and the Middle East. The smoker draws through a long pipe, smoke flavored tobacco. Although filtered water, smoke contain certain amounts of nicotine, carbon monoxide and other harmful substances.


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