Discovery might one day lead to drugs to control excessive alcohol consumption, researchers say
By Robert Preidt
Tuesday, November 29, 2016
TUESDAY, Nov. 29, 2016 (HealthDay News) -- Scientists say they've identified a gene variant that dampens the desire to drink alcohol.
They said their discovery might lead to the development of drugs that could control alcohol consumption, possibly even among problem drinkers.
This variation of the beta-Klotho gene was pinpointed through genetic research involving more than 105,000 light and heavy social drinkers. Alcoholics were not included in the research, the study authors said.
Participants provided genetic samples and answered questionnaires on their weekly drinking habits.
Heavy drinking was defined as more than 21 drinks per week for men and more than 14 drinks per week for women. Light drinking was considered to be 14 drinks or less per week for men and seven drinks or less per week for women. A "drink" was the equivalent of a small glass of wine, or a half pint of beer.
"The study identified a variation in the [beta]-Klotho gene linked to the regulation of social alcohol consumption. The less frequent variant -- seen in approximately 40 percent of the people in this study -- is associated with a decreased desire to drink alcohol," said study co-corresponding author David Mangelsdorf. He is chair of pharmacology at University of Texas Southwestern Medical Center in Dallas.
"Excessive alcohol consumption is a major public health problem worldwide, causing more than 3 million deaths per year," said study co-corresponding author Steven Kliewer, a professor of molecular biology and pharmacology at UT Southwestern.
"Much of the research on alcohol consumption has focused on addiction. However, the overall burden of alcohol-associated disease reflects the total amount of alcohol consumed, not just addiction," he said in a university news release.
Having people shift from heavy to moderate social drinking could have significant public health benefits, such as reduced heart disease risk, the researchers said.
Heavy drinking is linked to two heart disease risk factors in particular, high blood pressure and obesity, according to the American Heart Association.
The study was published online Nov. 28 in the Proceedings of the National Academy of Sciences.
SOURCE: University of Texas Southwestern Medical Center, news release, Nov. 28, 2016
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