"We found that people who drink heavily may be changing their DNA in a way that makes them crave alcohol even more," said senior study author Dipak Sarkar. He directs the endocrine program in the School of Environmental and Biological Sciences at Rutgers University in New Brunswick, N.J.
Sarkar and his team focused on two genes that play a role in controlling drinking: PER2, which influences the body's biological clock, and POMC, which regulates the stress-response system.
The researchers found that in binge and heavy drinkers, the two genes had changes caused by an alcohol-influenced gene modification process called methylation.
The binge and heavy drinkers also had reductions in gene expression, which is the rate at which the two genes create proteins.
These changes in the two genes increased with alcohol intake, according to the study.
The researchers also found that the alcohol-triggered changes in the two genes of binge and heavy drinkers were associated with a greater craving for alcohol.
"This may help explain why alcoholism is such a powerful addiction, and may one day contribute to new ways to treat alcoholism or help prevent at-risk people from becoming addicted," Sarkar said in a Rutgers news release.
The findings may also help researchers identify proteins or genes that could predict a person's risk for binge or heavy drinking," Sarkar added.
There were more than 3 million alcohol-related deaths worldwide in 2016, which was 5 percent of all deaths globally, according to the World Health Organization. Harmful use of alcohol was also linked with about 5 percent of disease and injuries worldwide.
The study was published recently in the journal Alcoholism: Clinical & Experimental Research.
The U.S. National Institute on Alcohol Abuse and Alcoholism has more on alcohol and your health.
How Heavy Drinking Might Boost Your Appetite for is young people’s mental health getting worse? Alcohol
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Some studies have shown that increases in plate size can make you serve larger food portions. "Certainly if people do for some reason inadvertently or for planned reasons happen to binge drink it should be something that's highly moderated and learnt from and not engaged program Slashed Racial Disparities in Early Lung Cancer Tx in on an ongoing basis.". "It can't be stored, the only way you can dispose of alcohol is to metabolise it for energy, and so that means that anything that you're eating at the same time or shortly afterwards is going to be preferentially stored. Professor Wittert, who was hospital Prices Outgrew Physician Prices in 2007-2014 not involved in the research, said the findings are surprising, considering alcohol is calorie dense and should in theory supress appetite signals.