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Ch 13 Lesson 2 Notes – addiction, dependence, secondhand smoke Addiction – a physical or mental need for a drug or other substance Can be tobacco, alcohol, drugs, caffeine, video games or anything Center for Disease Control and Prevention (CDC) lists nicotine addiction to be the most common for of drug addiction in the US. Physiological Dependence – Type of addiction in which the body itself feels a direct need for a drug. Body craves it. - It takes approximately 20 seconds for nicotine to reach the brain - Activates the adrenal glands - Leaves the body craving more Psychological Dependence - Type of addiction in which the mind send signals to the body that it needs more of a substance. Association of activities (coffee and cigarette in morning) Withdrawals – physical symptoms that occur when someone stops using a substance they are addicted to. - Nervousness - Moodiness - Difficulty sleeping - Tremors Public Health Cost of Tobacco – In 2006 Ohio became a smoke-free state in hopes of lowering the health issues. Users cannot smoke in public places; restaurants, public buildings etc. Secondhand smoke – smoke that a nonsmoker inhales Passive smokers – people who don’t smoke but are exposed to tobacco smoke as a result of being around smokers Mainstream smoke – smoke a smoker exhales Sidestream smoke - smoke that comes from the burning tip of a cigarette