People abuse substances such as drugs, alcohol, and tobacco for varied and complicated reasons, but it is clear that our society pays a significant cost. The toll for this abuse can be seen in our hospitals and emergency departments through direct damage to health by substance abuse and its link to physical trauma. Jails and prisons tally daily the strong connection between crime and drug dependence and abuse. Although use of some drugs such as cocaine has declined, use of other drugs such as heroin and "club drugs" has increased.
Finding effective treatment for and prevention of substance abuse has been difficult. Through research, we now have a better understanding of the behavior. Studies have made it clear that drug education and prevention aimed at children and adolescents offers the best chance to curb abuse nationally.
The National Institute on Drug Abuse estimated the number of users of illicit drugs in 2014 in the United States ages 12 and over to be about 7 million. In addition, the survey estimated that 6.4% of Americans (roughly 17 million adults) abuse or are dependent on alcohol.
Abused substances produce some form of intoxication that alters judgment, perception, attention, or physical control.
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Under the Affordable Care Act, many health insurance plans will cover preventive mental health services, including screening tests for depression and alcohol misuse, at no cost to you. Learn more.
Many substances can bring on withdrawal, an effect caused by cessation or reduction in the amount of the substance used. Withdrawal can range from mild anxiety to seizures and hallucinations. Drug overdose may also cause death.
Many substances, such as alcohol, tranquilizers, opiates, and stimulants, over time also can produce a phenomenon known as tolerance, where you must use a larger amount of the drug to produce the same level of intoxication.
Tobacco: People cite many reasons for using tobacco, including pleasure, improved performance and vigilance, relief of depression, curbing hunger, and weight control.
Smoking is responsible for nearly a half million deaths each year. Tobacco use costs the nation an estimated $300 billion a year, in direct and indirect health care costs and lost productivity.
Alcohol: Although many people have a drink as a "pick me up," alcohol actually depresses the brain. Alcohol lessens your inhibitions, slurs speech, and decreases muscle control and coordination, and may lead to alcoholism.
Withdrawal from alcohol can cause anxiety, irregular heartbeat, tremor, seizures, and hallucinations. In its severest form, withdrawal combined with malnutrition can lead to a life-threatening condition called delirium tremens (DTs). Alcohol can cause heart enlargement and increase the risk for cancer of the esophagus and stomach. It can also cause chronic inflammation of the pancreas (chronic pancreatitis) and cirrhosis of the liver, which are both considered to be risk factors for pancreatic cancer.
In addition to its direct health effects, officials associate alcohol abuse with nearly half of all fatal motor vehicle accidents. In 1992, the total economic cost of alcohol abuse was estimated at $150 billion.
Marijuana (also known as grass, pot, weed, herb): Marijuana, which comes from the plant Cannabis sativa, is the most commonly used illegal drug in the United States. The plant produces delta-9-tetrahydrocannabinol (THC), the active ingredient associated with intoxication. Marijuana resin, called hashish, contains an even higher concentration of THC. In 2014, there were 22.2 million Americans age 12 and over who reported using marijuana in the past month, up from 14.4 million (5.8 percent) in 2007. The drug is usually smoked, but it can also be eaten. Its smoke irritates your lungs more and contains more cancer-causing chemicals than tobacco smoke. Common effects of marijuana use include pleasure, relaxation, and impaired coordination and memory.
Often, the first illegal drug people use, marijuana is associated with increased risk of progressing to more powerful and dangerous drugs such as cocaine and heroin. The risk for progressing to cocaine is 104 times higher if you have smoked marijuana at least once than if you never smoked marijuana.
Cocaine (also known as crack, coke, snow, rock): Cocaine use has gone down in the last few years; from 2007 to 2012, the number of current users in the U.S. ages 12 or older dropped from 2.1 million to 1.7 million. In 2014, the number of adults (ages 12 and older) that reported using cocaine in the previous month was 0.10 percent.
Derived from the coca plant of South America, cocaine can be smoked, injected, snorted, or swallowed. The intensity and duration of the drug’s effects depend on how you take it. Desired effects include pleasure and increased alertness.
Short-term effects also include paranoia, constriction of blood vessels leading to heart damage or stroke, irregular heartbeat, and death. Severe depression and reduced energy often accompany withdrawal.
Both short- and long-term use of cocaine has been associated with damage to the heart, the brain, the lung, and the kidneys.
Heroin (also known as smack, horse): Heroin use continues to increase. According to the National Survey on Drug Use and Health (NSDUH), in 2012 about 669,000 Americans reported using heroin in the past year, a number that has been on the rise since 2007. The biggest increases are among users ages 18 to 25.
Effects of heroin intoxication include drowsiness, pleasure, and slowed breathing. Withdrawal can be intense and can include vomiting, abdominal cramps, diarrhea, confusion, aches, and sweating.
Overdose may result in death from respiratory arrest (stopping breathing). Because heroin is usually injected, often with dirty needles, use of the drug can trigger other health complications including destruction of your heart valves, HIV/AIDS, infections, tetanus, and botulism.
Methamphetamine (also known as meth, crank, ice, speed, crystal): Use of this drug also has increased, especially in the West. Methamphetamine is a powerful stimulant that increases alertness, decreases appetite, and gives a sensation of pleasure. The drug can be injected, snorted, smoked, or eaten. It shares many of the same toxic effects as cocaine -- heart attacks, dangerously high blood pressure, and stroke. Withdrawal often causes depression, abdominal cramps, and increased appetite. Other long-term effects include paranoia, hallucinations, weight loss, destruction of teeth, and heart damage.
Club drugs: The club scene and rave parties have popularized an assortment of other drugs. Many young people believe these drugs are harmless or even healthy. These are the more popular club drugs:
Ecstasy (also called MDMA, or 3,4-methylenedioxy-methamphetamine, as well as Adam, STP): This is a stimulant and hallucinogen used to improve mood and to maintain energy, often for all-night dance parties. Long-term use may cause damage to the brain’s ability to regulate body temperature, sleep, pain, memory, and emotions.
GHB (gamma hydroxybutyrate; also called Liquid XTC, G, blue nitro): Once sold at health food stores, GHB's effects are related to dose. Effects range from mild relaxation to coma or death. GHB is often used as a date-rape drug because it is tasteless, colorless, and acts as a powerful sedative.
Rohypnol (also called roofies, roche): This is another sedative that can be used as a date-rape drug. Effects include low blood pressure, dizziness, abdominal cramps, confusion, and impaired memory.
Ketamine (also called Special K, K): This is an anesthetic that can be taken orally or injected. Ketamine (Ketalar) can impair memory and attention. Higher doses can cause amnesia, paranoia and hallucinations, depression, and difficulty breathing.
LSD (also called acid, microdot) and mushrooms (also called shrooms, magic mushrooms, peyote, buttons): Popular in the 1960s, LSD has been revived in the club scene. LSD and hallucinogenic mushrooms can cause hallucinations, numbness, nausea, and increased heart rate. Long-term effects include unwanted "flashbacks," psychosis (hallucinations, delusions, paranoia), and mood disturbances.
PCP (also known as angel dust, hog, love boat): PCP is a powerful anesthetic used in veterinary medicine. Its effects are similar to those of ketamine but often stronger. The anesthetic effects are so strong that you can break your arm but not feel any pain. Usually, tobacco or marijuana cigarettes are dipped into PCP and then smoked.