Methamphetamine misuse has profound consequences that extend far beyond the individual user. Its effects are felt throughout healthcare systems, families, workplaces, schools, law enforcement, and communities. Healthcare professionals, including dental practitioners, may encounter patients whose oral disease, behavioral changes, or medical complications are directly or indirectly related to methamphetamine use disorder.2,3,6
Illicit methamphetamine production and trafficking also create substantial public safety concerns. Although domestic clandestine methamphetamine laboratories still occur, most methamphetamine available in the United States is now produced by transnational criminal organizations. Nevertheless, clandestine laboratories and small-scale production remain hazardous because of their potential for explosions, fires, toxic chemical exposure, and environmental contamination. Individuals living near or entering these sites—including children, neighbors, first responders, and law enforcement personnel—may be exposed to significant health risks2,30,34,36
Methamphetamine use is associated with numerous forms of criminal activity, including theft, identity theft, burglary, domestic violence, drug trafficking, and other offenses driven by addiction or the illegal drug trade. One method of obtaining precursor chemicals, commonly referred to as "smurfing," involves recruiting multiple individuals to purchase legal quantities of pseudoephedrine-containing products from numerous retail locations. Although federal and state purchase restrictions have substantially reduced this practice, it continues to occur in some areas.32
Methamphetamine use also places a significant economic burden on society. Costs include emergency medical care, hospitalization, substance use treatment, incarceration, child welfare services, environmental remediation, lost productivity, and law enforcement activities. Cleanup of clandestine methamphetamine laboratories is particularly expensive because hazardous chemical waste generated during production contaminates homes, vehicles, soil, groundwater, and personal property, requiring specialized remediation before affected properties can be safely reoccupied.30,34,36,37
Methamphetamine misuse also contributes to the transmission of infectious diseases through injection drug use and high-risk sexual behaviors. Individuals who inject methamphetamine are at increased risk for HIV, hepatitis B, hepatitis C, skin and soft tissue infections, and infective endocarditis.20,43
Methamphetamine produces an intense but relatively short-lived euphoric effect by causing the rapid release of dopamine, norepinephrine, and serotonin within the central nervous system. Repeated exposure quickly leads to tolerance, prompting many individuals to increase the dose, frequency, or route of administration in an attempt to reproduce the initial euphoric effect. Some users engage in prolonged binge episodes, commonly referred to as "runs," during which methamphetamine may be used continuously for several days with little or no sleep.3,20,41
Polysubstance use has become increasingly common, particularly the combined use of methamphetamine and illicitly manufactured fentanyl. This combination—sometimes referred to as "speedballing" or "goofballing"—substantially increases the risk of overdose because stimulant effects may temporarily mask opioid-induced respiratory depression. As the stimulant effects diminish, life-threatening respiratory depression from the opioid may become more apparent.2,3,30
Public education remains an essential component of methamphetamine prevention. National, state, and community-based prevention campaigns have increased awareness of the medical, social, and legal consequences of methamphetamine use while promoting early intervention and treatment. Although approaches differ among programs, effective prevention efforts emphasize evidence-based education, reduction of stigma, and improved access to treatment for individuals with stimulant use disorder.1,4,6,31
Emerging trends continue to challenge public health and law enforcement agencies. Drug trafficking organizations increasingly employ sophisticated transportation methods and communication technologies, while online marketplaces and encrypted communication platforms have facilitated aspects of illicit drug distribution. At the same time, continued monitoring of methamphetamine trafficking patterns, purity, adulterants, and geographic distribution remains essential for public health surveillance and law enforcement planning.2,30,33
