ScienceDaily: Living Well News |
- The mu opioid receptor genotype may be a marker for those who drink for alcohol's rewarding effects
- Chronic alcohol and marijuana use during youth can compromise white-matter integrity
- Negative emotionality may make some people more prone to alcohol or other drug problems
- Early drunkenness may be riskier than an early age at first drink for problem behaviors
| 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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