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Tobacco. Facts  A single puff of tobacco smoke exposes the body to more that 4,000 chemicals.  Almost all of these make the body unable to work as it.

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Presentation on theme: "Tobacco. Facts  A single puff of tobacco smoke exposes the body to more that 4,000 chemicals.  Almost all of these make the body unable to work as it."— Presentation transcript:

1 Tobacco

2 Facts  A single puff of tobacco smoke exposes the body to more that 4,000 chemicals.  Almost all of these make the body unable to work as it should.  At least 43 of the chemicals in tobacco smoke are known to cause cancer in smokers.  Called carcinogens  Smoke also harms the health of nonsmokers.  Even smokeless tobacco causes health problems, including cancer in its users.

3 Scary Facts  Smoking kills more people than AIDS, drug abuse, car accidents, and murder – combined.  6,000 teenagers light up every day for the very first time.  More than 3,000 kids become regular smokers each day.  Over 430,000 people die each year in the US from smoking.

4 What is in Tobacco?  Nicotine : is an addictive drug found in tobacco.  It makes tobacco users crave more nicotine.  Causes both stimulant & depressant effects:  Stimulation for approximately 45-60 minutes.  Depressant effects if another cigarette is not used.

5 What is in Tobacco?  Tar : is a thick dark liquid that forms when tobacco burns.  This liquid covers the lining of the lungs.  Carbon Monoxide : is a colorless, odorless, poisonous gas produced when tobacco burns. http://catrineayrshirecouk.ipage.com/tarbig.jpg

6 Other Chemicals in Tobacco Smoke:  Formaldehyde : irritating acidic gas that is used in lab disinfectants and preservatives.  Cyanide : is a deadly poison.  Methanol : a poisonous liquid alcohol, is known to cause blindness. http://www.healthybeautyproject.com/wp- content/uploads/2011/03/formaldehyde.jpg

7 Tobacco in Many Forms  It comes in several forms:  Smoked or chewed.  Most common is smoked.  Cigarettes:  Made from shredded tobacco leaves.  Filters in cigarettes can reduce amount of nicotine & tar in cigarette smoke.  They do not help to decrease the amount of carbon monoxide and other disease-causing chemicals.

8 Tobacco in Many Forms  Smokeless Tobacco:  Two forms of tobacco are placed in the mouth instead of being smoked.  Chewing Tobacco: Made from compressed, coarsely ground leaves.  A wad is placed between the cheek and gum, where it is sucked or chewed.  Snuff: if a finely ground, powdery substance. It is placed between the lower lip & gum, where it mixes with saliva and is absorbed.

9 Tobacco in Many Forms  Smokeless Tobacco is NOT a safe alternative to smoking.  The nicotine is just as harmful & addictive.  Also linked to increased incidence of mouth cancer and cancers of the esophagus, larynx and pancreas.  Also inflamed gums, bad breath, yellowed teeth, and stomach ulcers.

10 Tobacco in Many Forms  Pipes & Cigars:  Also use shredded tobacco leaves, some of which may be flavored.  These smoker usually develop lung cancers less often because they usually inhale less smoke.  More likely than cigarette smokers to develop cancers of lip, mouth, tongue and throat.

11 Tobacco & Your Body  Nervous system: Smoking reduces the flow of oxygen to the brain, possibly leading to a stroke.  Circulatory system: Smoking weakens the blood vessels.  Smoking also causes a fatty buildup that clogs the blood vessels, increasing the risk of heart attack or a stroke.

12 Tobacco & Your Body  Respiratory system: Tar & other chemicals leave a sticky residue that destroys structures in the lungs.  Also damages the alveoli, the tiny air sacs in the lungs. This damage causes difficulty in breathing & prevents oxygen from getting to the rest of the body.  Smokers are 10X more likely than nonsmokers to develop lung cancer.

13 Tobacco & Your Body  Digestive system: Tobacco causes bad breath.  It stains the teeth & makes them susceptible to cavities.  Tobacco dulls the taste buds and can cause cancer of the mouth and throat.  It is also a cause of stomach ulcers.  Excretory System: Smoking increases the danger of bladder cancer.  Smokers have 2X the risk of bladder cancer than nonsmokers have.

14 The Costs to Society  Smokers pay a high price:  Price of tobacco products  Pack of cigarettes now costs $5 W. Virginia, $9 here, $12.50 in NY.  Cost of health care  One MRI scan can cost up to $3000.  In 1965 health warnings began to appear on cigarette packs.  1971 cigarette advertisements were banned from radio & TV.  1996 regulations were approved to limit access persons under 18.

15 Why Teens Start…  Pages 282 - 283

16 Tobacco Addiction  Addiction: a physical or psychological need for a drug or other substance.  Withdrawal: unpleasant symptoms that occur when someone stops using an addictive substance.  Become anxious, depressed, irritable & tired.  Nicotine cause TWO kinds of addiction: physiological and psychological.

17 Tobacco Addiction  Physiological dependence: a type of addiction in which the body itself feels a direct need for a drug. - Nicotine.  This is strong in smokers: Smokers will not feel normal again until they have another dose of the drug.  As body becomes more accustomed to the drug, the body needs it more & more often to feel its effect.

18 Tobacco Addiction  Physiological :  Brain: Nicotine inhaled from a cigarette reaches the brain in 20 seconds.  Leads to increased HR and BP.  Heart: Nicotine increases the HR by as much as 33 BPM.

19 Tobacco Addiction  Psychological: Is an addiction in which the mind sends the body the message that it needs more of a substance.  Habits: smoking after a meal, reading newspaper, work break, etc.  Feel calmer after smoke, but only feeding the addiction, not actually calmer.

20 Short-Term Effects  Increased heart rate  Vasoconstriction (narrowing of blood vessels)  Lowered skin temperature  Diarrhea & intestinal cramps  Restricted blood flow to the skin – may interfere with healing & causes premature ageing.

21 Long-Term Effects  Heart & Blood vessels  Cardiovascular disease – heart attacks, stroke, hypertension  Atherosclerosis & arteriosclerosis  Hardening of arteries  Why? Carbon monoxide attaches to hemoglobin – prevents oxygen from getting to cells.  (oxygen attaches to hemoglobin)

22 Long-Term Effects  Lungs –  Emphysema, bronchitis, Cancer, Asthma  Chronic Obstructive Pulmonary Disease (COPD)  Chronic bronchitis & emphysema  Why? Tar build-up on mucus lining – immobilized cilia.

23 Emphysema http://emphysema.org/graphics/emphysema.jpg http://thekaulmd.info/WebPages/img/emphysema_large.jpg

24 Long-Term Effects  Leukoplakia – chewing tobacco  Leathery, pre-cancerous white patches in the mouth where a person has repeatedly used chewing tobacco. http://www.dentistry.leeds.ac.uk/oralpath/viruses/viral%20infections/340%20im ages/other%20viral%20images/hairy%20leukoplakia.jpg http://hardinmd.lib.uiowa.edu/pictures22/cdc/6061_lores.jpg

25 Long-Term Effects  Hairy Tongue – chewing tobacco  Elongation of the papillae on the tongue: resembles hair. http://www.riversideonline.com/source/images/image_popup/ww5rn8 3.jpg http://3.bp.blogspot.com/_SUh3PCqo5mg/TJ7nsddFuGI/AAAAAAAAAI A/6zO9SAclw4I/s1600/black+hairy+tongue.jpg

26 Effects on Embryo/Fetus  Nicotine is found in breast milk & passes through the placenta.  High risk of stillbirth & miscarriage  High risk of hearing impairments.  Low birth weight (less than 5.5lbs)  Growth & intellectual deficiencies  More prone to SIDS (sudden infant death syndrome)  Higher risk of birth defects.

27 Staying Tobacco Free  Pages 287 – 291  Saying No to Tobacco - 287  Kicking the habit – 288  Programs that help – 289  How tobacco affects nonsmokers – 290


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