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Substance abuse refers to the overindulgence in and dependence on a stimulant, depressant, chemical substance, herb (plant) or fungus leading to effects that are detrimental to the individual's physical health or mental health, or the welfare of others.

The disorder is characterized by a pattern of continued pathological use of a medication, non-medically indicated drug or toxin, that results in repeated adverse social consequences related to drug use, such as failure to meet work, family, or school obligations, interpersonal conflicts, or legal problems. There are on-going debates as to the exact distinctions between substance abuse and substance dependence, but current practice standard distinguishes between the two by defining substance dependence in terms of physiological and behavioral symptoms of substance use, and substance abuse in terms of the social consequences of substance use.

Substance abuse may lead to addiction or substance dependence. Medically, physiologic dependence requires the development of tolerance leading to withdrawal symptoms. Both abuse and dependence are distinct from addiction which involves a compulsion to continue using the substance despite the negative consequences, and may or may not involve chemical dependency. Dependence almost always implies abuse, but abuse frequently occurs without dependence, particularly when an individual first begins to abuse a substance. Dependence involves physiological processes while substance abuse reflects a complex interaction between the individual, the abused substance and society. *

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Action on Addiction - Charity researching the causes of substance addicition. News and details of current national and international activities, together with advice and suggestions on how you can help.

Drug Abuse Resistance Education (UK) Ltd - A Charity established to reduce drug, solvent and alcohol abuse and violence by teaching children the consequences and resistance skills.

Drug and Alcohol Action Programme - Drug and alcohol education, prevention and treatment programmes for ethnic minority communities, including South Asian and African families, affected by substance misuse, drug addiction and alcohol abuse.
Meta Description: [ UK, Drug Education for Black, Drug Education for Ethnic Minority, Drug Education for Ethnic Minorities, Drug Education for Ethnic, Drugs, Alcohol, Education, Ethnic Minorities, Ethnic Minority, Black people, UK Drug Education, UK Drugs, Drugs UK, UK Drugs Education, Drugs in the UK, Drugs in UK, ... ]

Drug and Alcohol Education Services - Company specialising in providing training and awareness programmes for individuals, groups or organisations.
Meta Description: [ Drug and Alcohol Education Services (DAES) is a company specialising in providing training and awareness programmes for individuals ]

Drugscope - Charity providing an online encycopaedia of drugs and directory of help sources.

EPRA (UK) - The Employment Project for Rehabilitation of Alcoholics and other Addicts is a registered charity. Provides a 6 phase programme to get addicts back to work.
Meta Description: [ EPRA (UK) - A registered charity. Details of the EPRA Employment Project, Programme and Courses for the Rehabilitation of Alcohlics and Addicts. ]

European Association for the Treatment of Addiction (UK) - Charity working to provide treatment facilities for addictions. Web site contains information about the organisation. A directory of treatment services is promised but not online yet.
Meta Description: [ EATA is a charity working to help ensure people with substance dependencies get the treatment they need. We work with providers, referrers, commissioners and policy makers to improve access and quality in the rehabilitative treatment of substance dependency. ]

HIT - Organisation providing training, consultation and information on drug-related issues. Aims to reduce harm caused by drug use.
Meta Description: [ HIT deliver effective interventions on drugs, alcohol, sexual health, community safety and other public health concerns. ]

Know the Score - Scotland's drugs information gateway with information on the effects of drug misuse.

Narcotics Anonymous - Official UK website of the international organisation, Narcotics Anonymous, run by recovering addicts. Uses a 12 Steps programme.

National Association of Alcoholism and Drug Abuse Counsellors - NAADAC is a professional association for counsellors.

NORCAS - Drug and Alcohol information and services for East Anglia.
Meta Description: [ Drug and Alcohol Service for Suffolk & Norfolk ]

Parents against Drug Abuse - Voluntary support group helping the families of drug abusers.

Re-Solv - Society for the Prevention of Solvent and Volatile Substance Abuse, a UK based charity providing information for parents and young people.
Meta Description: [ Re-Solv is the only UK charity solely dedicated to the prevention of solvent and volatile substance abuse ]

Trashed - Interactive site providing information on most used drugs, provided by the Health Education Authority.
Meta Description: [ RU Thinking About It? Sex Facts, Advice and Answers. Got a Question About Sex? Find out about it at RU Thinking. ]

Worcestershire Drug Action Team - Information on services, drugs, FAQs, and case studies.
Meta Description: [ If you or someone you know has problems with drug or alcohol abuse, then this is the site to visit. We have information on services, drugs, FAQ's, Cases studies and more. ]

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