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The shape of cocaine users’ brains may influence whether they become addicted to the drug, British researchers have found. A smaller frontal lobe is associated with a greater risk of cocaine addiction.

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A new study in rodents suggests that having a few drinks a day can adversely affect the brain.

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Alcohol’s damaging effect on the brain can begin to subside two weeks after a person stops drinking, a new study suggests. Recovery may vary among different areas of the brain, the researchers say.

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A decreased interest in food is associated with a greater interest in novelty-seeking behavior and cocaine use, a mouse study suggests.

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Poor impulse control may be pre-wired in some teenagers, suggests a new study. Researchers have identified brain networks that are linked to impulse control and drug addiction, which may exist even before someone is exposed to alcohol or drugs.

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Chronic cocaine use may accelerate aging of the brain, a new study suggests. The study found people with cocaine dependence have greater levels of age-related loss of nerve tissue in the brain called gray matter.

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Middle-aged male smokers experience a faster decline in brain function compared with men who never smoked, a new study finds. Decline in brain function among men who quit 10 years ago is similar to that seen in men who never smoked.

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Ecstasy may produce long-lasting changes in brain chemistry, a new study suggests. The drug can cause a drop in the levels of the brain chemical serotonin for up to two years.

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Chemical changes caused by cocaine may be passed on to the next generation, a new study of rats suggests. The changes cause male offspring to find the drug less rewarding.

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The American Society of Addiction Medicine has released a new definition of addiction, calling it a chronic brain disorder, not just a behavior problem.

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