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Monday, December 17, 2012

ScienceDaily: Living Well News

ScienceDaily: Living Well News


The mu opioid receptor genotype may be a marker for those who drink for alcohol's rewarding effects

Posted: 14 Dec 2012 04:09 PM PST

Previous research has found that individuals who become more energized, talkative, and/or social when they drink – versus sedated or sleepy – are more likely to drink more heavily. A new study examined the impact of a mutation of the mu opioid receptor gene on the effects of drinking. Findings indicate that the OPRM1 genotype seems to moderate the pleasant and stimulating effects to alcohol among alcohol-dependent individuals.

Chronic alcohol and marijuana use during youth can compromise white-matter integrity

Posted: 14 Dec 2012 04:09 PM PST

Chronic alcohol and marijuana during youth is associated with worsened neurocognitive abilities into later adolescence and adulthood. A new study examines fiber tract integrity affected by adolescent alcohol and marijuana use for 1.5 years. Results support previous findings of reduced white-matter integrity in these youth.

Negative emotionality may make some people more prone to alcohol or other drug problems

Posted: 14 Dec 2012 04:09 PM PST

Sensitivity to the stimulating effects of alcohol and other drugs is a risk marker for their problematic use. Negative emotionality has also been associated with substance use. New findings indicate that a high level of negative emotionality may lead to problem drinking when it occurs together with sensitivity to a drug-based reward.

Early drunkenness may be riskier than an early age at first drink for problem behaviors

Posted: 14 Dec 2012 04:09 PM PST

Many researchers and clinicians believe that an early age at first drink (AFD) can lead to alcohol problems. A new study challenges that belief by examining linkages between AFD and problem behaviors. Findings show that early drunkenness was a greater risk factor for 15-year-olds than an early AFD.

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