News tagged with addictions

PET/CT reveals adaptations of the alcoholic brain

Alcoholism is a devastating disorder that too often leads to a perpetual cycle of abuse. An emerging molecular imaging technique may provide a way to break that cycle. It could signal patients' heightened risk and lead to ...

Jun 13, 2016
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New role for glial energy metabolism in addiction

Addiction may be viewed as a disorder of reward learning. To date, addiction research has focused on the molecular adaptations through which memories of exposure to abused substances are encoded and maintained by nerve cells.

Jun 09, 2016
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Hunting for the brain's opioid addiction switch

New research by Steven Laviolette's research team at Western University is contributing to a better understanding of the ways opiate-class drugs modify brain circuits to drive the addiction cycle. Using rodent models of opiate ...

May 31, 2016
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What can Pavlov's dogs tell us about drinking?

Humans aren't much different from other animals. Just like Pavlov's dogs, we can become conditioned to associate environmental cues with rewards. Innocent enough when the sight of your sneakers makes you want to go for a ...

May 25, 2016
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Addiction

Historically, addiction has been defined as physical and psychological dependence on psychoactive substances (for example alcohol, tobacco, heroin, caffeine and other drugs) which cross the blood-brain barrier once ingested, temporarily altering the chemical milieu of the brain.

Addiction can also be viewed as a continued involvement with a substance or activity despite the negative consequences associated with it. Pleasure, enjoyment or relief from actual or perceived ailments would have originally been sought; however, over a period of time involvement with the substance or activity is needed to feel normal. Some psychology professionals and many laypeople now mean 'addiction' to include abnormal psychological dependency on such things as gambling, food, sex, pornography, computers, internet, work, exercise, idolizing, watching TV or certain types of non-pornographic videos, spiritual obsession, self-injury and shopping.

The American Society of Addiction Medicine begins their definition of addiction by describing it as "a primary, chronic disease of brain reward, motivation, memory and related circuitry."

This text uses material from Wikipedia, licensed under CC BY-SA

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