Stimulants
Stimulants have the opposite effect of depressants by speeding up the central nervous system. They increase alertness and energy and can produce euphoria or anxiety. Some are legal and some are illegal, and many very different drugs are all considered stimulants: caffeine, cocaine, methamphetamine and other amphetamines, nicotine (tobacco), and Ritalin. Stimulants can be very physically addictive, and nicotine is thought to be more addictive than heroin. While caffeine is very safe as long as someone does not have too many cups of coffee daily, many other stimulants may have dangerous short-term or long-term side effects on the cardiovascular system.
Not all drugs can be discussed in one chapter. In choosing which drugs to discuss in a book on social problems, it makes sense to discuss the drugs that probably concern Americans the most. We thus focus in the remainder of this section mostly on alcohol, tobacco, marijuana, cocaine, and heroin.
Legal Drugs
As noted earlier, alcohol and tobacco (nicotine) are two legal drugs that are very common and that together kill hundreds of thousands of Americans annually. According to national survey evidence collected by the Substance Abuse and Mental Health Services Administration (SAMHSA) of the federal government, most people 12 and older (as well as many younger than 18) have tried alcohol, and over half the public drinks currently (defined as having had at least one drink in the past month). While many people have tried tobacco, only slightly more than one-fourth of the public uses it currently (at least once during the past month). Table 7.1 "Prevalence of Alcohol and Tobacco Use, Ages 12 and Older, 2010*" summarizes the prevalence of alcohol and nicotine use. Translating some of these percentages into actual numbers, almost 70 million Americans are current tobacco users (mostly by smoking cigarettes), and 131 million are current alcohol users.
Table 7.1 Prevalence of Alcohol and Tobacco Use, Ages 12 and Older, 2010*
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