Chapter 21 Chapter 21

Lesson 1Lesson 1

Did You Know ?Did You Know ?

More and more people are becoming More and more people are becoming aware of the health risks of tobacco aware of the health risks of tobacco use. The current trend is for use. The current trend is for individuals to choose to be tobacco individuals to choose to be tobacco free.free.

Tobacco UseTobacco Use

A.A. Tobacco use is the number-one cause of Tobacco use is the number-one cause of preventable disease and death in the preventable disease and death in the United States.United States.

B.B. The government requires all tobacco The government requires all tobacco products to have warning labels.products to have warning labels.

C.C. Tobacco contains many health risks.Tobacco contains many health risks.1. It contains an addictive drug called nicotine.1. It contains an addictive drug called nicotine.

2. The nicotine is a stimulant, raising blood 2. The nicotine is a stimulant, raising blood pressure, increasing heart rate, and pressure, increasing heart rate, and contributing to heart disease and stroke.contributing to heart disease and stroke.

Harmful Effects of Cigarette Harmful Effects of Cigarette SmokeSmoke

A.A. Cigarette smoke is a carcinogen, Cigarette smoke is a carcinogen, cancer-causing substance.cancer-causing substance.

B.B. Cigarette smoke contains tar.Cigarette smoke contains tar.1. Tar is a thick, dark fluid produced 1. Tar is a thick, dark fluid produced when tobacco burns.when tobacco burns.

2. Tar damages the lungs air sacs and 2. Tar damages the lungs air sacs and destroys lung tissue.destroys lung tissue.

3. Smokers’ lungs are more susceptible 3. Smokers’ lungs are more susceptible to bronchitis, pneumonia, and cancer.to bronchitis, pneumonia, and cancer.

Harmful Effects of Cigarette Harmful Effects of Cigarette SmokeSmoke

C. Cigarette smoke contains carbon C. Cigarette smoke contains carbon monoxide.monoxide.

1. It is a colorless, odorless, and 1. It is a colorless, odorless, and poisonous gas.poisonous gas.

2. It replaces oxygen in the blood, 2. It replaces oxygen in the blood, depriving tissues and cells of oxygen.depriving tissues and cells of oxygen.

3. It can cause high blood pressure, 3. It can cause high blood pressure, heart disease, and hardening of the heart disease, and hardening of the arteries.arteries.

Harmful Effects of Pipes and Harmful Effects of Pipes and CigarsCigars

A.A. Cigars contain more nicotine and Cigars contain more nicotine and produce more tar and carbon produce more tar and carbon monoxide than cigarettes do.monoxide than cigarettes do.

B.B. Pipe and cigar tobacco can cause lip, Pipe and cigar tobacco can cause lip, mouth, and throat cancer.mouth, and throat cancer.

Harmful Effects of Smokeless Harmful Effects of Smokeless TobaccoTobacco

A.A. It contains nicotine and carcinogens.It contains nicotine and carcinogens.B.B. The body receives two to three times more The body receives two to three times more

nicotine and carcinogens than it receives nicotine and carcinogens than it receives from a single cigarette.from a single cigarette.

C.C. It is addictive and poses a dangerous health It is addictive and poses a dangerous health risk.risk.

1. It can irritate the mouth tissue and 1. It can irritate the mouth tissue and cause leukoplakia, white, leathery-looking cause leukoplakia, white, leathery-looking spots on the skin that can cause cancer.spots on the skin that can cause cancer.

2. It can cause cancers of the throat, 2. It can cause cancers of the throat, larynx, esophagus, stomach, and pancreas.larynx, esophagus, stomach, and pancreas.

How Tobacco Affects the How Tobacco Affects the BodyBody

A.A. Short-term effects occur immediately after Short-term effects occur immediately after using tobacco.using tobacco.

1. There are changes in brain chemistry. Users 1. There are changes in brain chemistry. Users may experience withdrawal symptoms such as may experience withdrawal symptoms such as headaches, nervousness, and trembling.headaches, nervousness, and trembling.2. There is an increase in respiration and heart 2. There is an increase in respiration and heart rate. Breathing becomes more difficult during rate. Breathing becomes more difficult during physical activity.physical activity.3. Tobacco dulls taste buds and reduces 3. Tobacco dulls taste buds and reduces appetite.appetite.4. Tobacco causes bad breath and smelly hair, 4. Tobacco causes bad breath and smelly hair, clothes, and skin.clothes, and skin.

How Tobacco Affects the How Tobacco Affects the BodyBody

B. Long-term effects of tobacco harm many B. Long-term effects of tobacco harm many body systems.body systems.

1. It harms the nervous system, 1. It harms the nervous system, damaging the cilia and causing bronchitis.damaging the cilia and causing bronchitis.

2. It harms the respiratory system, 2. It harms the respiratory system, destroying the lungs’ tiny air sacs, causing destroying the lungs’ tiny air sacs, causing emphysema and possibly cancer.emphysema and possibly cancer.

3. It harms the cardiovascular system, 3. It harms the cardiovascular system, restricting the blood vessels and cutting restricting the blood vessels and cutting down on circulation. This leads to down on circulation. This leads to arteriosclerosis, coronary heart disease, and arteriosclerosis, coronary heart disease, and strokestroke

How Tobacco Affects the How Tobacco Affects the BodyBody

C. Tobacco brings serious consequences for C. Tobacco brings serious consequences for teens.teens.

1. There are legal consequences for 1. There are legal consequences for people selling tobacco to underage teens.people selling tobacco to underage teens.

2. Students who smoke many be 2. Students who smoke many be suspended or expelled.suspended or expelled.

3. The smell of tobacco is often 3. The smell of tobacco is often offensive, harming a smoker's social life.offensive, harming a smoker's social life.

4. Users can spend more then $2,000 a 4. Users can spend more then $2,000 a year buying tobacco products.year buying tobacco products.

5. United States taxpayers give out 5. United States taxpayers give out about $97 million a year.about $97 million a year.