Recreational drug use

• 1. Introduction

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  Recreational drug use sits at the intersection of biology, culture, law, and identity. About 5% of people worldwide aged 15 to 65 have used a controlled drug at least once, a figure that translates to somewhere between 158 million and 351 million individuals. That number excludes caffeine, alcohol, and nicotine, substances so ubiquitous that most people never think of them as drugs at all. The questions this documentary will pursue run deeper than any list of substances: Why do humans seek altered states? Who decides which alterations are acceptable? And what happens when the line between pleasure and harm becomes impossible to draw cleanly?

• 2. An Ancient Relationship

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  Anthropological research has suggested that humans may have evolved to counter-exploit plant neurotoxins. The idea is striking. Long before any legal code or medical system existed, the human body was already equipped with enzymes suited to processing psychoactive plant compounds. Researchers point specifically to cytochrome P450, a family of hepatic enzymes whose genetics suggest a co-evolutionary relationship with psychotropic plant substances that is millions of years old.

  A restrictive prehistoric diet may have made the apparent benefits of consuming psychoactive plants more pronounced. Many of those plants had themselves evolved compounds that mimic the brain's own neurotransmitters, offering the human nervous system a chemical shortcut. The ability to use botanical chemicals to substitute for endogenous neurotransmitters may even have improved survival rates, conferring what researchers describe as an evolutionary advantage. This ancient entanglement between human biology and psychoactive plants is the deep background against which every modern law, every medical debate, and every cultural norm plays out.

• 3. Why People Use

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  Addiction researcher Martin A. Plant observed that some people go through a period of self-redefinition before initiating recreational drug use. They come to see drug-taking as part of a broader lifestyle, one associated with belonging to a subculture they view as conferring elevated status and challenging social norms. In Plant's own words: "From the user's point of view there are many positive reasons to become part of the milieu of drug taking. The reasons for drug use appear to have as much to do with needs for friendship, pleasure and status as they do with unhappiness or poverty."

  Researchers have catalogued a wide range of contributing factors: genetics, personality type, psychological problems, depression, curiosity, boredom, rebelliousness, peer pressure, family and attachment issues, history of trauma, socioeconomic stressors, juvenile delinquency, and the simple availability of substances. No single cause has won consensus. Experts tend instead to apply the biopsychosocial model, which recognizes that any number of non-mutually-exclusive factors may be at work in any one person's choices. Social factors play a particularly large role in shaping exposure to specific drugs and patterns of use, regardless of an individual's genetics, mental health history, or personal background.

• 4. The Spectrum of Risk

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  Alcohol is sometimes considered one of the most dangerous recreational drugs, a designation that surprises many people given its legal and social standing in most of the world. It is classified as an IARC Group 1 carcinogen and a teratogen, and withdrawal from it can be life-threatening. Alcoholic drinks, tobacco products, and cannabis are regarded by various medical professionals as the most common gateway drugs.

  Some scientific studies in the early 21st century suggested that low to moderate alcohol consumption, particularly red wine, might reduce the risk of cardiovascular diseases, stroke, and cognitive decline. British researcher David Nutt, professor of neuropsychopharmacology at Imperial College London, disputed that claim directly. Nutt argued that those studies lacked controls for what subjects had been drinking beforehand, undermining their conclusions about moderate consumption in some middle-aged men.

  Experts in the United Kingdom have proposed that cannabis, psilocybin mushrooms, LSD, and MDMA may cause less harm to fewer users than several other controlled substances, though those drugs carry their own documented risks. Depressants, including alcohol, can trigger psychosis. A 2019 systematic review and meta-analysis by Murrie et al. found that the rate of transition from opioid, alcohol, and sedative-induced psychosis to schizophrenia was 12%, 10%, and 9% respectively. For hallucinogen-induced psychosis, the transition rate to schizophrenia is estimated at 26%. For amphetamine-induced psychosis, a 2019 meta-analysis found that 22% of individuals later received a schizophrenia diagnosis.

• 5. Culture and Counterculture

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  From the mid-19th century through the 1930s, American physicians prescribed Cannabis sativa for various medical conditions. That changed after the Marijuana Tax Act of 1937 outlawed it nationwide. By 1969, the FBI reported that arrests for marijuana possession had increased by 98% between 1966 and 1968. Despite that surge in enforcement, surveys suggested only about 4% of the American population had ever smoked marijuana by 1969. By 1972 that figure had risen to 12%, and it doubled again by 1977.

  The 1960s counterculture movement reshaped public perception of psychedelic drugs in the Western world. LSD, first synthesized in 1938 by Albert Hofmann, found its way into psychological therapy and, covertly, into CIA experiments under Project MKULTRA, where it was administered to unwitting US and Canadian citizens. It was banned in October 1968 by US President Lyndon B. Johnson. The counterculture linked psychedelics to social movements, generational conflict, and the search for what participants described as direct religious experience and expanded consciousness.

  The Controlled Substances Act of 1970 classified marijuana alongside heroin and LSD as a Schedule I drug, signifying the highest abuse potential and no accepted medical use. In 1975, Mexico agreed to eradicate cannabis crops by spraying them with the herbicide paraquat, raising fears of toxic contamination. Colombia then became the primary supplier to the United States. The strict laws and mandatory sentences of the Reagan and Bush administrations, spanning 1981 to 1993, pushed domestic cultivation indoors, particularly in Hawaii and California, where growers developed plants optimized for small size and high yield. After more than a decade of declining use, marijuana consumption began rising again in the early 1990s, especially among teenagers, before leveling off by decade's end well below earlier peaks.

• 6. Harm Reduction and Prevention

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  Harm-reduction policies took shape in the 1970s counterculture, partly through cartoons explaining responsible drug use and its consequences. They were popularized as a formal policy framework in the late 1980s. The core principle is straightforward: users should not take drugs while driving, swimming, operating machinery, or engaging in any activity that requires a sober state.

  Illegality itself creates a layer of danger that harm reduction frameworks seek to address. When drugs are produced and distributed outside any regulatory system, they can be cut with adulterants, and purity varies widely, making overdoses substantially more likely. Proponents of drug-law reform argue that legalized production and distribution could reduce those specific dangers.

  In the United States, one in four adolescents has used an illegal drug, yet only one in ten of those who need addiction treatment receives any kind of care. School-based programs are the most commonly used method for drug education, but their success depends heavily on participant commitment, and the evidence for their effectiveness is limited. One data point from Australia illustrates how normalized some drug use has become: the 2016 national drug strategy household survey found that at least 86.2% of Australians aged 12 and over had consumed alcohol at least once in their lifetime, compared with 34.8% who had used cannabis at least once. In the 12 months before that survey, at least 10.4% of all Australians had smoked cannabis at least once.

• 7. Drugs in the Imagination

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  Drug use pervades fiction, entertainment, and the arts in ways that reflect the legal and social norms of each era. In video games alone the range is striking: cocaine gum replenishes stamina in Red Dead Redemption 2; the Fuzzies in Super Mario World 2: Yoshi's Island distort the player's view when accidentally consumed; coke dealing forms a central mechanic in Scarface: The World Is Yours. The Fallout franchise uses the term "chems" for its in-game drugs, which can serve as power-ups, obstacles, or tradeable goods depending on context. Drug trafficking and gang rivalries are also central to the Grand Theft Auto franchise.

  In music, the genres hip hop, hardcore rap, and trap have been described as continuously celebrating drug trafficking, gangster lifestyle, and substance use since their emergence in the United States during the late 1980s and early 1990s. Since the early 2000s, medical professionals have also documented rising consumption of club drugs such as MDMA, cocaine, rohypnol, GHB, ketamine, PCP, LSD, and methamphetamine in connection with rave culture among adolescents and young adults in the Western world. Studies have found that adolescents are more likely than young adults to use multiple drugs simultaneously, and club drug use is highly associated with criminal behavior and alcohol abuse. The psilocybin mushroom known as Liberty Cap, Psilocybe semilanceata, common throughout Europe, was not known to contain psilocybin until Albert Hofmann chemically analysed it in 1963, despite that compound having long been identified in species from Mexico, Asia, and North America.