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Warm-Up

Warm-Up. Most people know that tobacco is harmful. Why do you think some people continue to use tobacco products?. Tobacco: The Effects of Tobacco Use. Lesson 13. Tobacco: A Serious Health Risk.

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Warm-Up

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  1. Warm-Up • Most people know that tobacco is harmful. Why do you think some people continue to use tobacco products?

  2. Tobacco: The Effects of Tobacco Use Lesson 13

  3. Tobacco: A Serious Health Risk • According to the Surgeon General, tobacco use is the NUMBER 1 cause of preventative disease and death in the United States • Avoiding all forms of tobacco can prevent many serious health problems • Many people start smoking thinking they can quit whenever they want, but once they have formed the habit it is very difficult to quit

  4. Nicotine • The addictive drug found in tobacco leaves • A substance that causes physiological or psychological dependence • Nicotine is a stimulant • A drug that increases the action of the central nervous system, the heart and other organs • Raises blood pressure • Increases heart rate • Contributes to heart disease • Contributes to stroke

  5. Cigarette Smoke- A Toxic Mixture • Tobacco is not only addictive, but the smoke is TOXIC • The Environmental Protection Agency classified second-hand smoke as a Group A carcinogen • Cancer causing substance • Cigarettes contain 43 known carcinogens, including formaldehyde and arsenic. They also contain chemicals used in insecticides, paint, toilet cleaners, antifreeze and explosives

  6. Tar • A thick, sticky, dark fluid produced when tobacco burns • Effects of tar • Destroys cilia, tiny hair-like structures that line the upper airways and protect against infection • damages alveoli, the air sacs in the lugs which absorb oxygen and rid the body of carbon dioxide • Destroys lung tissue, making lungs less able to function

  7. Healthy lung vs Smoker’s lung

  8. Carbon Monoxide • Another component found in cigarette smoke • Colorless, odorless, poisonous gas • Taken up more readily by the blood than oxygen, replacing oxygen in the blood and depriving the tissues and cells of the body • Increases the risk of high blood pressure, heart disease and hardening of the arteries

  9. Harmful Effects of Pipes and Cigars • Cigars contain more nicotine and produce more tar and carbon monoxide than cigarettes do • One cigar can contain as much nicotine as A PACK of cigarettes • Pipe and cigar smokers have an increased risk of developing cancers of the lip, mouth and throat • Lungs damaged by smoking are more susceptible to diseases such as bronchitis, pneumonia, emphysema and cancer

  10. Harmful Effects of Smokeless Tobacco • Smokeless tobacco • Sniffed through nose, held in mouth, or chewed • Contains nicotine in addition to 28 carcinogens all of which are absorbed into the blood • Since it is often held in the mouth, it delivers both nicotine and carcinogens to the body at levels that can be 2-3 times the amount delivered by a single cigarette • Irritates the mouth’s sensitive tissues, causing leukoplakia

  11. Leukoplakia • Thickened, white, leathery looking spots on the inside of the mouth that can develop into oral cancer • Cancers of the throat, larynx, esophagus, stomach and pancreas are also more common among users of smokeless tobacco

  12. Short Term Effects of Tobacco Use • Changes in brain chemistry • Addictive properties of nicotine cause the body to crave more of the drug • User may experience withdrawal symptoms such as headaches, nervousness and trembling as soon as 30 minutes after his/her last tobacco use • Increased respiration and heart rate • Breathing becomes more difficult • Nicotine can cause an irregular heart rate • Dulled taste buds and reduced appetite • Bad breath • Smelly hair, clothes and skin • May cause people to avoid the tobacco user

  13. Long Term Effects of Tobacco Use • Chronic bronchitis • Damage to the cilia cause them to lose function. This causes a build up of tar causing chronic coughing and excessive mucus secretion • Emphysema • Destroys the alveoli in the lungs making it more difficult for the lungs to absorb oxygen. • A person with advanced emphysema uses up to 80 percent of his or her energy in order to breathe!!!! • Lung cancer • With the build up of mucus due to the destruction of cilia, cancerous cells can begin to grow • Unless detected early, lung cancer causes death • Coronary heart disease and stroke • Nicotine constricts blood vessels, decreasing circulation • Nicotine contributes to plaque buildup in blood vessels, leading to hardened arteries (arteriosclerosis) • Clogged arteries increase the risk of heart attack and stroke The risk of sudden death from heart disease is THREE TIMES greater for smokers

  14. Other Consequences: • Legal • Selling tobacco to people under 18 is illegal • Schools prohibit the use of tobacco products on school property • Social • People find secondhand smoke and the smell of tobacco offensive • Tobacco users may be excluded from social gatherings • Bad breath, yellowed teeth and smelly clothing may also harm a tobacco user’s social life • Financial • Expensive to use tobacco products • Total economic cost of tobacco use to taxpayers in the US is $97 BILLION a year

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