Related Experiment Video
Updated: Jul 31, 2026

10:35
A Procedure to Study the Effect of Prolonged Food Restriction on Heroin Seeking in Abstinent Rats
Published on: November 12, 2013
British opiate addicts: an 11-year follow-up
Summary
This 11-year study of 83 British drug addicts found that those still using drugs showed improved stability in drug use, crime, and social factors. Many participants achieved greater stability over time.
Area of Science:
- Addiction research
- Longitudinal studies in substance abuse
Background:
- Understanding long-term outcomes for individuals with drug addiction is crucial.
- Previous research has often focused on short-term interventions rather than long-term trajectories.
Purpose of the Study:
- To investigate the long-term (11-year) outcomes of a cohort of British drug addicts.
- To assess changes in drug use, criminality, and social stability over time.
Main Methods:
- A cohort of 83 individuals diagnosed with drug addiction was followed for 11 years.
- Data was collected through personal searches of Home Office records and medical notes.
- Current status regarding drug use, criminality, and social stability was determined.
Main Results:
- After 11 years, 29 individuals were still using drugs, 37 were not known to be using drugs, and 17 had died.
- The subgroup of individuals still using drugs demonstrated significant improvements in stability concerning drug use, criminal activity, and social integration.
- Despite continued use, participants showed a trend towards more stable life parameters.
Conclusions:
- Long-term follow-up reveals diverse outcomes in drug addiction, including mortality and sustained use.
- Individuals with ongoing drug use can achieve greater stability in key life domains over an 11-year period.
- This suggests that stability in addiction is a dynamic process, not solely defined by abstinence.
Related Concept Videos
Drug Dependence
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...
Drug Abuse and Addiction: Pharmacological Phenomena
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...
Opioid Receptors: Overview
Opioid receptors, including the mu (μ, MOR), delta (δ, DOR), and kappa (κ, KOR) types, belong to the rhodopsin family of G protein-coupled receptors. These receptors are located throughout the central and peripheral nervous systems and in non-neuronal tissues such as macrophages and astrocytes. Opioid receptor ligands can be categorized into agonists or antagonists. Highly selective agonists include [d-Ala2, MePhe4, Gly(ol)5]-enkephalin or DAMGO for MOR, [D-Pen2, D-Pen5]-enkephalin or DPDPE for...
Analgesia and Pain Management
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
Opioid Analgesics: Morphine and Other Natural Cogeners
Opioids are a class of drugs that mimic endogenous opioid peptides and act on opioid receptors, and help in pain relief. These compounds are classified as natural, synthetic, or semi-synthetic. Natural opioids, like morphine, codeine, and thebaine, are derived from the opium poppy plant (Papaver somniferum or Papaver album) and are termed opiates. Synthetic opioids are artificial, while semi-synthetic opioids combine natural and synthetic compounds. Morphine, a prototypical opioid, possesses a...
Opioid Analgesics: Synthetic and Semisynthetic Opioids
Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...

