Health Sciences 1001A/B Lecture Notes - Lecture 16: Psychoactive Drug, Passive Smoking, Sidestream Smoke

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Smoking is the most preventable cause of disease and premature death in canada. Every cigarette smoked reduces life expectancy ~11 mins. More than 37,000 people die prematurely each year in canada due to tobacco. Tobacco use is widespread in our society. Amount stored in body increases with each puff (>10 puffs per cigarette) >1 year at 1 pack per day = 73,000 puffs of chemicals. Long term effects of smoking: lower life expectancy: on average, smokers live 10-15 years less than non- smokers. Environmental tobacco smoke (ets: commonly called secondhand smoke, consists of: Labeled a class a cancer causing substance (most dangerous of cancer agents, no known safe exposure; u. s. environmental protection agency) Regular exposure to ets increases chances of contracting lung disease by. At least 1,000 non-smokers die from exposure to ets in canada each year. At least 700 from coronary heart disease.

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