When cigar smokers don't inhale or smoke few cigars per day, the risks are only slightly above those of never smokers. Risks of lung cancer increase with increasing inhalation and with increasing number of cigars smoked per day, but the effect of inhalation is more powerful than that for number of cigars per day. When 5 or more cigars are smoked per day and there is moderate inhalation, the lung cancer risks of cigar smoking approximate those of a one pack per day cigarette smoker. As the tobacco smoke exposure of the lung in cigar smokers increases to approximate the frequency of smoking and depth of inhalation found in cigarette smokers, the difference in lung cancer risks produced by these two behaviors disappears.Burns, "Cigar Smoking: Overview and Current State of the Science," p. 8.
When cigar smokers don't inhale or smoke few cigars per day, the risks are only slightly above those of never smokers. Risks of lung cancer increase with increasing inhalation and with increasing number of cigars smoked per day but the effect of inhalation is more powerful than that for number of cigars per day. When 5 or more cigars are smoked per day and there is moderate inhalation, the lung cancer risks of cigar smoking approximate those of a one pack per day cigar.ette smoker. As the tobacco smoke exposure of the lung in cigar smokers increases to approximate the frequency of smoking and depth of inhalation found in cigarette smokers, the difference in lung cancer risks produced by these two behaviors disappearsBurns, "Cigar Smoking: Overview and Curren,t State of the Science," p. 8.