Chapter 21Tobacco

Lesson One

The Effects of Tobacco Use

Pgs 540-545

Tobacco Use is a Serious Health Risk Tobacco use is the

number one cause of preventable disease

All tobacco products must carry warning labels

Still teens begin to smoke, chew, and dip

Nicotine Tobacco contains

nicotine, which is an addictive drug

Nicotine is found in tobacco leaves

Nicotine is a stimulant, which increases the action of the central nervous system-increases heart rate and blood pressure

Cigarette Smoke The smoke from

burning tobacco is toxic

Tobacco smoke is a cancer-causing substance called a carcinogen

Cigarette Smoke Cigarette smoke contains tar, a thick sticky

dark fluid produced when tobacco burns

Tar penetrates a smoker’s respiratory system and destroys structures in the airways and damages the lungs and lung tissue

Cigarette Smoke Carbon monoxide is a compound found in

cigarette smoke that is a colorless, odorless, and poisonous gas that gets into the blood and deprives the tissues and cells of oxygen. It increases the risk of high blood pressure and heart disease

Pipes and Cigars Cigars have more

nicotine and produce more tar than cigarettes

Pipe and cigar smokers can develop cancer of the lip, mouth, and throat

Smokeless Tobacco Smokeless tobacco is

a sniffed through the nose, held in the mouth, or chewed

It contains nicotine and 28 carcinogens

Smokeless Tobacco

Smokeless tobacco is just as addictive as smoked tobacco

Because it is held in the mouth it delivers two to three times the nicotine as a cigarette

Causes leukoplakia (white spots in the mouth) that can develop into cancer

Smokeless Tobacco Damage Smokeless tobacco

users sometimes require surgery to remove the cancer and infected tissue

The surgery leaves the person with obvious deformities

Short-Term Effects of Tobacco Use

Changes in brain chemistry: 1. the addictive properties cause the body to crave more; 2. user experiences withdrawal symptoms like headaches & nervousness

Increased respiration and heart rate: breathing during exercise is difficult and nicotine can cause an irregular heart rate

Short-Term Effects of Tobacco Use

Dulled taste buds and reduced appetite: many smokers lose the ability to enjoy food

Bad breath, smelly hair, clothes, and skin: unattractive effects that may cause others to avoid the user

Long-Term Effects of Tobacco Use

Chronic bronchitis which develops because the cilia no longer function and the lungs are built up with tar

Emphysema is a disease that destroys the air sacs in the lungs so the person must use 80% of their energy just to breathe

Long-Term Effects of Tobacco Use

Lung cancer occurs when the cilia are destroyed and mucous cannot be expelled

Coronary heart disease and stroke because nicotine reduces circulation and blood flow and adds to plaque build-up in the artery walls

Other Consequences

Legal: 1. selling tobacco products to minors is illegal; 2. schools prohibit the use of tobacco products so a student may be suspended or expelled

Social: tobacco users may be excluded socially because of the smell and secondhand smoke

Financial: tobacco products are expensive-smokers can spend $2000 a year on cigarettes