News tagged with addictive drugs

Compulsive eating shares addictive biochemical mechanism with cocaine, heroin abuse: study

In a newly published study, scientists from The Scripps Research Institute have shown for the first time that the same molecular mechanisms that drive people into drug addiction are behind the compulsion to overeat, pushing ...

Medicine & Health / Neuroscience

created Mar 28, 2010 | popularity 4.5 / 5 (10) | comments 6 | with audio podcast

Dopamine enhances expectation of pleasure in humans

(PhysOrg.com) -- Enhancing the effects of the brain chemical dopamine influences how people make life choices by affecting expectations of pleasure, according to new research from the UCL Institute of Neurology.

Medicine & Health / Neuroscience

created Nov 12, 2009 | popularity 4.2 / 5 (10) | comments 0

Flipping the brain's addiction switch without drugs

When someone becomes dependent on drugs or alcohol, the brain's pleasure center gets hijacked, disrupting the normal functioning of its reward circuitry.

Medicine & Health / Medical research

created May 28, 2009 | popularity 5 / 5 (5) | comments 0

Scientists crack molecular code regulating neuronal excitability

A key question in protein biochemistry is how proteins recognize "correct" interaction partners in a sea of cellular factors. Nowhere is that more critical to know than in the brain, where interactions governing ...

Medicine & Health / Medical research

created Mar 22, 2011 | popularity 5 / 5 (2) | comments 0 | with audio podcast

Miniature 'wearable' PET scanner ready for use (w/ Video)

(PhysOrg.com) -- Scientists from the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, Stony Brook University, and collaborators have demonstrated the efficacy of a "wearable," portable PET ...

Medicine & Health / Medical research

created Mar 13, 2011 | popularity 4.7 / 5 (3) | comments 2 | with audio podcast

Binge eaters' dopamine levels spike at sight, smell of food

(PhysOrg.com) -- A brain imaging study at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory reveals a subtle difference between ordinary obese subjects and those who compulsively overeat, ...

Medicine & Health / Medical research

created Feb 28, 2011 | popularity 5 / 5 (2) | comments 0 | with audio podcast

A thirst for excitement is hidden in your genes

Sensation seeking -- the urge to do exciting things -- has been linked to dopamine, a chemical that carries messages in your brain. For a new study published in Psychological Science, a journal of the Association for Psycho ...

Medicine & Health / Psychology & Psychiatry

created Oct 05, 2010 | popularity 4 / 5 (3) | comments 0 | with audio podcast

Milkshake like cocaine for overeaters: Imaging shows the powerful impact food has on the brain

Millions of overweight Americans consider food the enemy. And according to new research, this enemy plays devious mind games.

Medicine & Health / Neuroscience

created Sep 30, 2010 | popularity 5 / 5 (5) | comments 1 | with audio podcast

Desire and dread: Brain's computer has separate keyboard to control powerful emotions

(PhysOrg.com) -- Controlling powerful emotional reactions is often difficult because the brain's computer has a separate "keyboard" that controls feelings within extreme emotions like desire and dread, according to University ...

Medicine & Health / Psychology & Psychiatry

created Jun 30, 2010 | popularity 4.7 / 5 (7) | comments 0 | with audio podcast

Birds and mammals share a common brain circuit for learning

(PhysOrg.com) -- Bird song learning is a model system for studying the general principles of learning, but attempts to draw parallels between learning in birds and mammals have been difficult because of anatomical ...

Biology / Plants & Animals

created May 18, 2010 | popularity 5 / 5 (4) | comments 0 | with audio podcast

Problem gamblers provoked by 'near misses' to gamble more

The brains of problem gamblers react more intensely to "near misses" than casual gamblers, possibly spurring them on to play more, according to new research in the May 5 issue of The Journal of Neuroscience. The re ...

Medicine & Health / Neuroscience

created May 04, 2010 | popularity 3.5 / 5 (4) | comments 3 | with audio podcast

Smoking is dumb: Researcher finds link between cigarette smoking and IQ

"Only dopes use dope," goes the memorable warning about drugs. Now a Tel Aviv University researcher cautions that the same goes for cigarettes.

Medicine & Health / Health

created Apr 01, 2010 | popularity 4.1 / 5 (23) | comments 29 | with audio podcast

Loss of epigenetic regulators causes mental retardation (w/ Video)

(PhysOrg.com) -- Developing neurons don’t just need the right genes to guide them as they grow, they need access to the right genes at the right times. The improper functioning of one specific protein complex that normally ...

Medicine & Health / Neuroscience

created Jan 11, 2010 | popularity 5 / 5 (3) | comments 0 | with audio podcast

New mechanism underlying cocaine addiction discovered

Researchers have identified a key epigenetic mechanism in the brain that helps explain cocaine's addictiveness, according to research funded by the National Institute on Drug Abuse (NIDA), part of the National Institutes ...

Medicine & Health / Medical research

created Jan 07, 2010 | popularity 4 / 5 (2) | comments 0 | with audio podcast

A new ally in the battle against cocaine addiction

A recent study shows that a bacterial protein may help cocaine addicts break the habit.

Medicine & Health / Medical research

created Jan 02, 2010 | popularity 3.3 / 5 (4) | comments 2 | with audio podcast

Drug addiction

Drug addiction is a pathological condition. The disorder of addiction involves the progression of acute drug use to the development of drug-seeking behavior, the vulnerability to relapse, and the decreased, slowed ability to respond to naturally rewarding stimuli. The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) has categorized three stages of addiction: preoccupation/anticipation, binge/intoxication, and withdrawal/negative affect. These stages are characterized, respectively, everywhere by constant cravings and preoccupation with obtaining the substance; using more of the substance than necessary to experience the intoxicating effects; and experiencing tolerance, withdrawal symptoms, and decreased motivation for normal life activities. By the American Society of Addiction Medicine definition, drug addiction differs from drug dependence and drug tolerance.

It is, both among scientists and other writers, quite usual to allow the concept of drug addiction to include persons who are not drug abusers according to the definition of the American Society of Addiction Medicine. The term drug addiction is then used as a category which may include the same persons who under the DSM-IV can be given the diagnosis of substance dependence or substance abuse. (See also DSM-IV Codes)

For more information about Drug addiction, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.