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Poor Impulse Control May be Pre-Wired in Some Teens

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. …

Chronic Cocaine Use May Hasten Aging of the Brain

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. …

Men Who Smoke Have Faster Brain Function Decline Than Nonsmokers

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. …

Ecstasy May Cause Long-Lasting Changes in the Brain, Study Suggests

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. …

Male Offspring of Cocaine-Using Rats Less Likely to Be Attracted to the Drug

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. …

Medical Group Calls Addiction Brain Disorder, Not Behavior Problem

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

Protein Could Hold Clues for New Addiction Treatments, Animal Study Suggests

A finding about the role of a protein in the brain that influences behavior may hold clues to addiction-like behaviors, a study in mice suggests. The research could help scientists searching for more effective addiction treatments, according to Science Daily. …

Study Links Smoking With Brain Changes and Memory Decline

Smoking is an important risk factor in brain shrinkage and a decline in brain function in later years, a new study suggests. …

Binge Drinking Could Cause Brain Damage in Young Adults, Study Suggests

A study that scanned the brains of binge drinkers ages 18 to 25 shows that regularly having many drinks in one sitting can affect an area of the brain related to paying attention, making decisions and controlling impulses. …

Imaging Scans Show Daily Marijuana Use Can Have Negative Effect on Brain

Imaging scans of the brains of people who smoke marijuana daily show a decrease in the number of receptors involved in pleasure, appetite, pain tolerance and many other key mental and bodily functions, a new study shows. …