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Related Concept Videos

Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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An Overview of Psychoactive Drugs01:28

An Overview of Psychoactive Drugs

Psychoactive drugs impact brain function, influencing perception, mood, consciousness, cognition, and behavior. These substances are grouped based on their effects and the mechanisms by which they act.
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Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not necessarily...
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Hallucinogens are psychoactive substances that profoundly alter perceptual experiences, generating unreal visual and sensory images. Often referred to as psychedelic drugs — a term derived from the Greek words "psyche" (mind) and "delos" (revealing) — these substances include marijuana and lysergic acid diethylamide (LSD), among others. These drugs vary in intensity and effects.
Marijuana, derived from the dried leaves and flowers of the hemp plant, contains delta-9-tetrahydrocannabinol (THC)...
CNS Stimulants: Psychedelic Agents01:22

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Hallucinogens, also known as psychedelic drugs, are a class of substances known for their ability to alter perception, cognition, and emotions. Despite their profound effects on the mind, these drugs are non-addictive, setting them apart from many other abused substances. The mechanism of action of these drugs lies in their impact on the 5-HT2A receptor in the brain. Upon activation, this receptor couples to Gq-type G proteins, triggering a cascade that releases intracellular calcium. This...
Drug Dependence01:17

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Medications are typically administered to achieve therapeutic effects. Some drugs can modify an individual's mood and perception, frequently resulting in various enjoyable experiences. However, this can result in drug dependency, a condition marked by continuous drug use despite potential negative consequences. Drug dependency primarily falls into two categories: psychological and physical dependence. Psychological dependence occurs when the pleasurable feelings induced by the drug...

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Related Experiment Video

Updated: May 31, 2026

Administration of Δ9-Tetrahydrocannabinol (THC) in Adolescent and Adult Mice
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Psychoactive substance use among medical students.

R V Ali1, G K Vankar

  • 1R.V. Zulfikar Ali, MBBS, DPM, Post Graduate student, Department of Psychiatry, Government Medical College, Majura Gate, Surat - 395 001.

Indian Journal of Psychiatry
|July 12, 2011
PubMed
Summary

A significant portion of medical students engage in non-medical drug use, with substances like alcohol and cigarettes being most common. Use often begins during medical college, particularly among men and final-year students.

Keywords:
Psychoactive substancedepressionmedical studentsuse

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Area of Science:

  • Epidemiology
  • Medical Education
  • Public Health

Background:

  • Psychoactive drug use is a concern within student populations.
  • Understanding substance use patterns in medical students is crucial for targeted interventions.

Purpose of the Study:

  • To determine the prevalence and patterns of psychoactive drug use among medical students.
  • To identify substances commonly used and factors associated with higher prevalence.

Main Methods:

  • A standard epidemiological survey instrument was administered to 215 medical students across three classes.
  • Data collected included types of substances used, frequency of use, and timing of initiation.

Main Results:

  • One-third of medical students reported non-medical drug use.
  • Prevalent substances included betel nut (13%), cigarettes (12%), and alcohol (12.5%).
  • Cigarette and benzodiazepine use initiation was frequently observed after entering medical college, with higher prevalence in men and final-year students.

Conclusions:

  • Non-medical psychoactive drug use is prevalent among medical students.
  • The medical school environment may influence the initiation and continuation of substance use.
  • Targeted prevention and intervention strategies are needed for this population.