The National Survey on Drug Use and Health (NSDUH) obtains information on illicit drug use by surveying the following categories: marijuana/hashish, cocaine/crack, heroin, hallucinogens, and inhalants. Several drugs are grouped under the hallucinogens category including lysergic acid diethylamide (LSD), phencyclidine (PCP), peyote, mescaline, psilocybin mushrooms, and Ecstasy (MDMA). Inhalants include a variety of substances such as nitrous oxide, amyl nitrite, cleaning fluids, gasoline, spray paint, other aerosol sprays, and glue.
Estimates of illicit drug use reported by the NSDUH reflect the use of any of the drug categories listed above. In 2018, an estimated 53.2 million Americans aged 12 or older reported using illicit drug during the past year. This estimate represents 19.4% of the population aged 12 or older (Figure 13).46-48
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