Chapter 20 Tobacco Lesson 1 The Health Risks
Chapter 20 Tobacco
Lesson 1 ¡ The Health Risks of Tobacco Use
Health Risks of Tobacco Use ¡ ¡ ¡ What’s the truth about tobacco? All tobacco products display warning labels stating that using tobacco products can be harmful to an individual’s health. Tobacco use is the leading cause of preventable death and disability in the United States. Forms of tobacco: smoking, chewing or dipping Smoking is linked to lung disease, cancers and heart disease. 90% of adult smokers began in their teens
Nicotine ¡ ¡ Addictive Drug: substance that causes physiological or psychological dependence. All tobacco products contain nicotineaddictive drug found in tobacco leaves. Nicotine is a stimulant- drug that increases the action of the central nervous system, the heart and other organs. Using nicotine raises blood pressure and increases heart rate.
Poisonous Substances in Tobacco Smoke Tobacco is addictive and is toxic ¡ Tobacco is a carcinogen-cancercausing substance ¡ Tobacco smoke contains tar and carbon monoxide, and also contains the same poisonous compounds found in products such as paint, rat poison and toilet cleaner. ¡
Tar ¡ ¡ ¡ Thick, sticky, dark fluid produced when tobacco burns Damages a smoker’s respiratory system by paralyzing and destroying cilia, the tiny hairlike structures that line the upper airways and protect the body against infection. Destroys the alveoli-air like sacs which absorb oxygen and rid the body of carbon dioxide. Lung tissue is damaged Smokers are more susceptible to diseases like bronchitis, pneumonia, emphysema, heart disease and cancer. 87% of cancer deaths are from smoking
Carbon Monoxide ¡ ¡ Colorless, odorless, and poisonous gas. Found in cigarette smoke and absorbed more easily then oxygen. Deprives the body’s tissues and cells of oxygen Increases risk of high blood pressure, heart disease and hardening of the arteries and other circulatory problems
Pipes, Cigars, and Smokeless Tobacco ¡ ¡ Smoke from pipes and cigars also cause serious health consequences Cigars contain significantly more nicotine and produce more tar and carbon monoxide then cigarettes. One cigar contains as much nicotine as 20 cigarettes. Pipe and cigar smokers increase risk of developing cancers of the lips, mouth, throat, larynx, lungs and esophagus.
Pipes, Cigars and Smokeless Tobacco ¡ ¡ ¡ Smokeless Tobacco-tobacco that is sniffed through the nose, held in the mouth or chewed. A. K. A. Spitting Tobacco The nicotine and carcinogens in these products are absorbed into the blood through the mucous membranes in the mouth or digestive track. Harmful chemicals of smokeless tobacco are absorbed into the body at levels up to 3 x the amount of one cigarette. Exposure is 3 x longer then a cigarette Irritates the sensitive tissues of the mouth causing leukoplakia- thickened, white, leatherlooking spots on the inside of the mouth that can develop oral cancer.
Pipes, Cigars, and Smokeless Tobacco Smokeless tobacco causes cancers of the mouth, throat, larynx, esophagus, stomach and pancreas. ¡ Chewing 8 -10 plugs of tobacco a day is about the same as 2 packs of cigarettes. ¡
Harmful effects of Tobacco Use ¡ Short-Term Effects: l l Brain chemistry changes Respiration and heart rate increase Taste buds are dulled and appetite is reduced Users have bad breath, yellowed teeth, and smelly hair, skin and clothes
Long-Term Effects Chronic bronchitis ¡ Emphysema ¡ Lung cancer ¡ Coronary heart disease and stroke ¡ A weakened immune system ¡
Other Consequence Costs to Society ¡ Cost to Individuals ¡ Legal consequences ¡