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Lecture 13

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Western University
Health Sciences
Health Sciences 1001A/B
Shauna Burke

Chapter 16 Smoking Smoking - Leading cause of preventable death in Canada - Affect health of people at all stages of life and from all walks of life - Who uses? - 21% of Canadian population o Nearly 5.1 million people - 30% of all university students - 19% of men, 16% of women - - Women are smoking more now because want to lose weight - Ban sale to anyone younger than 18 years of age o But at least 50 million packs are used by minors each year - Women and men with drug abuse problem o 70% alcoholics o 90% of heroin addicts Why? - They have become addicted to nicotine o Nicotine – power psychoactive drug - At low doses, act as stimulant o Sometimes act as mild sedative Nicotine addiction - Loss of control o Half of all Canadian smokers want to quit o Of those quitting, 60% relapse in first 3 months and 75% relapse within 6 months - Tolerance and withdrawal o Withdrawal symptoms = severe cravings, insomnia, confusion, tremors, difficulty concentrating, fatigue, muscle pain, headache, nausea, irritability, anger, depression Why start in first place? - These apply to children or adolescent, more likely he/she is to use tobacco o Parent or sibling use o Peers use o Children from blue-collar o Children form low-income o Single parent o Poor in school o Drops out of school o Positive attitude about tobacco use Health Hazards - Tobacco adversely affect nearly every part of body, include brain, stomach, mouth, and reproductive organs - 43 chemicals in tobacco smoke lead to development of cancer - Use additives to manipulate taste and effects of cigarettes and other tobacco products - Some additives intended to make sidestream smoke - Result of inhaling tobacco smoke: absorbing some gases, tar, nicotine and keeping it there - Light cigarettes: inhale up to 8 times as much tar and nicotine as printed on label - Menthol= bronchodilator o Anaesthetizing effect which can allow smokers to inhale more deeply and hold smoke in lungs for longer Longer term of smoking - Cardiovascular disease o Myocardial infraction - Lung cancer and other cancers - Stroke, aortic aneurysm, pulmonary heart disease - Chronic obstructive pulmonary disease o Emphysema o Chronic bronchitis - Additional Health, Cosmetic, Economic Concerns - Ulcers - Impotence - Reproductive health problems - Dental disease -
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