Recreational drug use

Recreational drug use is the use of one or more psychoactive drugs to induce an altered state of consciousness, either for pleasure or for some other casual purpose or pastime. When a psychoactive drug enters the user's body, it induces an intoxicating effect. Recreational drugs are commonly divided into three categories: depressants (drugs that slow down the central nervous system), stimulants (drugs that speed up the central nervous system), and hallucinogens (drugs that induce perceptual distortions). In popular practice, recreational drug use is generally tolerated as a social behaviour, rather than perceived as the medical condition of self-medication. However, drug use and drug addiction are severely stigmatized everywhere in the world. Many people also use prescribed and controlled depressants such as opioids, opiates, and benzodiazepines. What controlled substances are considered generally unlawful to possess varies by country, but usually includes cannabis (though some areas have legalised cannabis use), cocaine, opioids, MDMA, amphetamine, methamphetamine, psychedelics, benzodiazepines, and barbiturates. As of 2015, it is estimated that about 5% of people worldwide aged 15 to 65 (158 million to 351 million) had used controlled drugs at least once. Common recreational drugs include caffeine, commonly found in coffee, tea, soft drinks, and chocolate; alcohol, commonly found in beer, wine, cocktails, and distilled spirits; nicotine, commonly found in tobacco, tobacco-based products, and electronic cigarettes; cannabis and hashish (with legality of possession varying inter/intra-nationally); and the controlled substances listed as controlled drugs in the Single Convention on Narcotic Drugs (1961) and the Convention on Psychotropic Substances (1971) of the United Nations (UN). Since the early 2000s, the European Union (EU) has developed several comprehensive and multidisciplinary strategies as part of its drug policy in order to prevent the diffusion of recreational drug use and abuse among the European population and raise public awareness on the adverse effects of drugs among all member states of the European Union, as well as conjoined efforts with European law enforcement agencies, such as Europol and EMCDDA, in order to counter organized crime and illegal drug trade in Europe.

Reasons for use

Many researchers have explored the etiology of recreational drug use. Some of the most common theories are: genetics, personality type, psychological problems, self-medication, sex, age, depression, curiosity, boredom, rebelliousness, a sense of belonging to a group, family, and attachment issues, history of trauma, failure at school or work, socioeconomic stressors, peer pressure, juvenile delinquency, availability, historical factors, and/or socio-cultural influences. There has been no consensus on a single cause. Instead, experts tend to apply the biopsychosocial model. Any number of factors may influence an individual's drug use, as they are not mutually exclusive. Regardless of genetics, mental health, or traumatic experiences, social factors play a large role in the exposure to and availability of certain types of drugs and patterns of use. According to addiction researcher Martin A. Plant, some people go through a period of self-redefinition before initiating recreational drug use. They tend to view using drugs as part of a general lifestyle that involves belonging to a subculture that they associate with heightened status and the challenging of social norms. Plant states: "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. Becoming a drug taker, to many people, is a positive affirmation rather than a negative experience".

Evolution

Anthropological research has suggested that humans "may have evolved to counter-exploit plant neurotoxins". The ability to use botanical chemicals to serve the function of endogenous neurotransmitters may have improved survival rates, conferring an evolutionary advantage. A typically restrictive prehistoric diet may have emphasized the apparent benefit of consuming psychoactive drugs, which had themselves evolved to imitate neurotransmitters. Chemical–ecological adaptations and the genetics of hepatic enzymes, particularly cytochrome P450, have led researchers to propose that "humans have shared a co-evolutionary relationship with psychotropic plant substances that is millions of years old."

Health risks

The severity of impact and type of risks that come with recreational drug use vary widely with the drug in question and the amount being used. There are many factors in the environment and within the user that interact with each drug differently. Alcohol is sometimes considered one of the most dangerous recreational drugs. Alcoholic drinks, tobacco products and other nicotine-based products (e.g., electronic cigarettes), and cannabis are regarded by various medical professionals as the most common and widespread gateway drugs. In the United States, Australia, and New Zealand, the general onset of drinking alcohol, tobacco smoking, cannabis smoking, and consumption of multiple drugs most frequently occurs during adolescence and in middle school and secondary school settings. Some scientific studies in the early 21st century found that a low to moderate level of alcohol consumption, particularly of red wine, might have substantial health benefits such as decreased risk of cardiovascular diseases, stroke, and cognitive decline. This claim has been disputed, specifically by British researcher David Nutt, professor of neuropsychopharmacology at the Imperial College London, who stated that studies showing benefits for "moderate" alcohol consumption in "some middle-aged men" lacked controls for the variable of what the subjects were drinking beforehand. Experts in the United Kingdom have suggested that some psychoactive drugs that may be causing less harm to fewer users (although they are also used less frequently in the first place) are cannabis, psilocybin mushrooms, LSD, and MDMA; however, these drugs have risks and side effects of their own.

Drug harmfulness

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