Secondhand smoke He has his daddy' s eyes and his momma' s lungs Secondhand Smoke Kills
Secondhand smoke:
The Changing Cigarette Since 1955, the United States sales weighted average smoke yields have declined from 38 mg tar and 2.7 mg nicotine/cigarette to 13.5 and 1.0 mg, respectively
The Changing Cigarette. • Since 1955, the United States sales weighted average smoke yields have declined from 38 mg tar and 2.7 mg nicotine/cigarette to 13.5 and 1.0 mg, respectively
18 Tar and Nicotine Content of U.S. Cigarettes The Sales-Weighted Average Basis, 1957-1987 1957-Reconstituted tobacco 4.0 1959-Porous 3.09 E 1967-Expanded tobacco 971-Ventilation 20 2.0 1.0 0 0.0 60 65“70 75 Year R CTLT Source: adapted by CtLt from U.S. Surgeon Generals Report.(1989). Update with Monograph 13
The Changing Cigarette 18 Source: adapted by CTLT from U.S. Surgeon General’s Report. (1989). Update with Monograph 13
s low tar cigarette safer? Failed to appreciate two important realities First, smokers may change the way they smoke in order to preserve their intake of nicotine Inhale deeper, larger and more frequent puff Increase the number of cigarettes smoked per day Switch to high tar yield cigarettes Second, tobacco companies are able to produce cigarettes that would yield very low tar and nicotine values when machine smoked, but yielded much higher levels of tar and nicotine when smoked by the smoker
Is low tar cigarette safer? • Failed to appreciate two important realities. ▫ First, smokers may change the way they smoke in order to preserve their intake of nicotine. Inhale deeper, larger and more frequent puff Increase the number of cigarettes smoked per day Switch to high tar yield cigarettes ▫ Second, tobacco companies are able to produce cigarettes that would yield very low tar and nicotine values when machine smoked, but yielded much higher levels of tar and nicotine when smoked by the smoker
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