Tobacco Basics
Transcription
Tobacco Basics
Tobacco: What’s the Big Deal? #1 Leading Cause of Preventable Death Kills 1,200 Americans every day That’s 450,000 Americans every year Kills 3 million people worldwide every year Tobacco Kills More Americans Each Year Than Alcohol Cocaine Crack Suicide Homicide Heroin Fires AIDS Car Accidents COMBINED! Young Blood Each day, more than 6,000 people under 18 try their first cigarette Half of them will become daily smokers 1 in 3 daily smokers will eventually die from smoking-related causes What is Nicotine? Nicotine (C10H14N2) is a naturally occurring liquid alkaloid. An alkaloid is an organic compound made out of carbon, hydrogen, nitrogen and sometimes oxygen. These chemicals have potent effects on the human body. For example, many people regularly enjoy the stimulating effects of another alkaloid, caffeine. Nicotine normally makes up about 5% of a tobacco plant, by weight. Cigarettes contain 8 to 20 milligrams (mg) of nicotine (depending on the brand), but only approximately 1 mg is actually absorbed by your body when you smoke a cigarette. Nicotine in the Body Nicotine readily diffuses through: Skin (the Patch) Lungs (Smoking) Mucous membranes (Chew/Snuff/Dip) Nicotine moves into the small blood vessels that line the tissues listed above. From there, nicotine travels through your bloodstream to the brain, and then is delivered to the rest of your body. The most common and fastest way to get nicotine into your bloodstream (within 10 to 15 seconds) is through inhalation -by smoking it. How Does Your Body Get Rid of Nicotine? About 80 % of nicotine is broken down by enzymes in your liver. Nicotine is also metabolized in your lungs. The remaining nicotine is filtered from the blood by your kidneys and excreted in the urine. Effects of Nicotine Nicotine changes how your brain and your body function. Nicotine can both invigorate and relax a smoker, depending on how much and how often they smoke. This biphasic effect is not uncommon. Nicotine’s Effects on the Body Nicotine initially causes a rapid release of adrenaline, the "fight-or-flight" hormone. Causing: * Rapid heartbeat * Increased blood pressure * Rapid, shallow breathing Does Smoking Decrease Appetite? Adrenaline also tells your body to dump some of its glucose stores into your blood. Nicotine itself may also block the release of the hormone insulin. Nicotine may also increase your basal metabolic rate (BMR) slightly. Over the long haul, nicotine can increase the level of the "bad" cholesterol, LDL, that damages your arteries. This makes it more likely that you could have a heart attack or a stroke. Nicotine and the Brain In your brain, neurons are the cells that transfer and integrate information. A synapse is the site where two neurons come into contact. Communication between neurons is mediated by chemical messengers, called neurotransmitters. Acetylcholine Nicotine works by docking to a subset of receptors that bind the neurotransmitter acetylcholine. Nicotine increases release of acetylcholine from the neurons. Through these pathways, nicotine improves your reaction time and your ability to pay attention, making you feel like you can work better. Dopamine, Glutamate, and Endorphins Nicotine promotes the release of the neurotransmitter dopamine in the reward pathways of your brain. Release of Glutamate, a neurotransmitter involved in learning and memory. Your brain makes more endorphins in response to nicotine. Endorphins can also lead to feelings of euphoria. The Dark Side of Nicotine Annual Deaths Attributable to Cigarette Smoking Lung Cancer 90% of lung cancer victims don't live beyond 5 years. Emphysema Macular Degeneration Tooth Loss and Decay Impotence Gangrene Smoker’s Palette Wrinkles Heart Disease Forms of Tobacco Cigarettes Cigars Chew Bidis Hookah Cigarettes #1 cause of fire-related deaths Cigarette Smoke contains over 4,000 toxic substances and 22 agents known to cause cancer When you inhale, a cigarette burns at 700°C at the tip and around 60°C in the core. This heat breaks down the tobacco to produce various toxins. As a cigarette burns, the residues are concentrated towards the butt. The Most Damaging Products: Tar, a carcinogen (substance that causes cancer) Nicotine is addictive and increases cholesterol levels in your body Carbon Monoxide reduces oxygen in the body Components of the gas cause chronic obstructive pulmonary disorder (COPD). What’s in That Cigarette? Acetone--------------------Nail Polish Remover Ammonium----------------Toilet Cleaner Arsenic---------------------Rat Poison Butane---------------------Lighter Fluid Carbon Monoxide---------Car Exhaust Fumes Formaldehyde-------------Embalming Fluid Hydrogen Cyanide--------Gas Chamber Poison Cigars More than 10 million Americans smoke cigars Women and Cigars Raquel Welch Claudia Schiffer Susan Lucci Demi Moore Cigars vs. Cigarettes A single cigar often contains more nicotine than an entire pack of cigarettes Cigars have more than 25 times the secondhand smoke as cigarettes Cigars emit 22 times more carbon monoxide than cigarettes Cigar smokers have higher rates of mouth, tongue, throat, and voice box cancer than cigarette smokers Health Risks for Women Smokers Women smokers are 3 times more likely to get lung cancer than men Women who smoke have twice the risk of cervical cancer Women who smoke and use oral contraceptives are at higher risk for stroke Women smokers tend to have earlier menopause Chew on This… Smokeless Tobacco: Chew/Dip/Snuff Of the 10 million users, 3 million are under 21 Tobacco industry sponsor rodeos, auto racing, and tractor pulls. 1 Dip delivers the same amount of nicotine as 3-4 cigarettes Causes Leukoplakia, precancerous white sores or patches in the mouth Other Effects: Cancer of the mouth Cancer of the pharynx Gum recession Bone loss Heart disease High blood pressure Bidis The “Poor Man’s Tobacco” Bidis are filter-less cigarettes imported from India. They are wrapped in nonporous leaves and sold in a variety of flavors. Bidis, with their enticing aromas and low prices, have become a new trend for today’s youth. • Bidi smoke contains 3 times the the nicotine and carbon monoxide and 5 times the tar as smoke from regular filtered cigarettes. • Due to the higher nicotine levels, bidis are more addictive than normal cigarettes. • Bidis are being mistaken for "healthy" cigarettes because they look natural. The truth is that they pose more of a threat for throat, mouth and lung cancer than regular cigarettes. Women and children in India work long hours for little pay to supply the increasingly popular bidi cigarettes. On a good day, women make 1,000 bidis, earning about 80 cents. Children are often forced to sit on damp floors to roll 1500 bidis a day for less than $.30 The Hookah Disney’s Alice in Wonderland (1951) Hookah (Narghile, Hubble Bubble) • Hookah pipes have been around for hundreds of years • They originated in the Middle East What’s Being Smoked? Older Generations: Smoked Hashish and Opium in the Hookah Current Day: Shisha (aka Massell) is a combination of foreign tobaccos, honey molasses and dried fruit. $2.00-4.00 per square What is Shisha? The shisha is not directly ignited but heated to a high temperature using lit coals Shisha is 30% tobacco and 70% fruit flavorings, molasses, and/or honey All major Shisha manufacturers list NICOTINE at 0.5% and TAR at 0.0%. Most cigarettes contain over 2.0% nicotine. Health Effects of Hookah Carbon Monoxide hazard is as high with Hookah smoking as with Cigarette smoking Hookah smoke is both Clastogenic: capable of causing breakage of chromosomes. Genotoxic: damaging to DNA and capable of causing mutations or cancer. More Health Effects Long-term health consequences of hookah pipe use may include: Nicotine Addiction Oral Cancer Lung Disease Heart Disease Affects on the fetus Secondhand smoke can affect smokers and non-smokers alike. Hookah vs. Cigarettes Cigarettes: Usually take 8-12 puffs of .5-.6 liters of smoke over 5-7 minutes. Hookah: 50-200 puffs of .15-1 liter each over 20-80 minutes Hookah user may inhale as much smoke in one session as 100 cigarettes or more Is It a Healthier Form of Smoking? Passing the smoke through water may remove some compounds, but many toxins remain in water-filtered smoke. Nicotine and carbon monoxide have been shown to make it through a water filter. Smoking hookah has been linked to heart disease, oral, esophageal, and lung cancer Smoking a Hookah doesn’t water down smoking- related health risks Tobacco and the Law Only establishments that qualify as a “retail or wholesale tobacco shop” may smoke indoors. An indoor hookah bar in CA is legal if it is owner- operated and has no employees Only 25% of outdoor patio seating may be used for smoking Where the Needs of Smokers and Non-Smokers Conflict, the Need to Breathe Smoke-Free Air Shall Have Greater Weight Secondhand Smoke A.K.A.- Environmental Tobacco Smoke SHS is the smoke exhaled from the lungs of smokers (Mainstream Smoke) and The smoke that comes from the burning end of a cigarette/cigar/pipe (Side-stream Smoke). You Don’t Have to Smoke to Inhale SHS is the 3rd leading cause of preventable death in the U.S. Kills 53,000 non-smokers every year Exacerbates a number of pre-existing health conditions like: - Allergies - Asthma - Bronchitis - Heart Disease Associated with sudden infant death syndrome (SIDS) and low birth weight infants Tobacco Statistics California 2004 Adults: 15.4% 18-24 year olds: 18.3% (CA’s highest smoking rate of any age group) UCSB 2003 15.6% of UCSB students have not smoked in the last 30 days. (But UCSB students perceive this # to be 90.7%) 8.4% of UCSB students smoke at least 3 days a week. (But UCSB students perceive this # to be 54.2%) Nicotine Addiction Not everyone that smokes is addicted, but roughly 60%-70% of regular smokers do become addicted! Nicotine addiction isn’t a linear phenomenon. Researchers suggest that there is an addiction tipping point, a threshold “I Only Smoke When I Drink” The federal government’s national health survey found that a fifth of all smokers don’t smoke everyday. There are millions of Americans who manage to smoke regularly and not be hooked. Occasional or social smokers are know as CHIPPERS “Chippers” Chippers are people who are capable of smoking up to 5 cigarettes a day without getting addicted Chippers’ smoking varies from day to day, including days of complete abstinence. Their smoking is not driven by withdrawal relief Chippers may have the genes to derive pleasure from nicotine, but not the genes to handle it in large doses. Every smoker starts out as a chipper, in the early period, but many move on to more dependent smoking. Media Literacy Name brands do not appear by accident Increased exposure to an object/idea= increased fondness for that object/idea Less credible sources have increased influence over time Tobacco in the Movies After declining over 3 decades, smoking in movies has returned to levels comparable to those observed in the 1950’s and 1960s. More than 85% of films contain tobacco use. Brand appearances were as common in films suited for adolescents as adults- 35% Specific brands appeared in 20% of children’s movies. Tobacco Portrayed as Affluent The presentation of smoking in films remains pro- tobacco, with only 14 % of tobacco screen-time presenting adverse social/health effects of tobacco use. Tobacco use in the movies is associated with youthful vigor, good health, good looks, and personal and professional acceptance. Where Do We Go From Here? Require that all movies containing tobacco use be rated “R”. Run anti-smoking spots during previews at movie theaters. Require that film makers publicly certify that they are not receiving funding from the tobacco industry