Passive smoking is considered a person who is exposed to inhalation of smoke from smoking snuff by people who are in their environment.
Passive smokers are therefore from the person who is occasionally indoors where there are smokers, even those others who live day to day with smokers. Passive smoking, sharing ends, with the active smokers, ie smoking, not just the smoke from the burning of snuff, but also diseases that can be developed by the nicotine habit.
Richard Doll, conducted a study in 1985, which concluded inter alia that “an hour a day in a room with a smoker increases a hundred times the risk of lung cancer in relation to a non-smoker who spend 20 years of his life in a building containing asbestos (dangerous carcinogen). ”
Early studies gave evidence on the risks of passive smoking is lung cancer, were made in 1981 by Takeshi Hirayama, who study Japanese women who did not smoke, married to smokers. Remaining from this initial finding, demonstrated the link between lung cancer and inhalation of smoke by the smoke. To date, other findings have confirmed this fatal relationship.
Passive smoking, inhaling smoke two types, both that which comes from the direct combustion of snuff and that comes of it, as the smoke exhaled by a smoker.
