Could 'virtual reality' treat alcoholism?

June 24, 2015
Credit: Kevin Casper/public domain

A form of 'virtual-reality' therapy may help people with alcohol dependence reduce their craving for alcohol, a new study suggests.

The findings, published in the July issue of the Journal of Studies on Alcohol and Drugs, come from a small study of just 10 patients. But researchers said they are optimistic about the potential for as a for .

'This technology is already popular in the fields of psychology and psychiatry,' said senior researcher Doug Hyun Han, M.D., Ph.D., of Chung-Ang University Hospital in Seoul, Korea.

Virtual-reality therapy has been used to treat phobias and , Han said. The idea is to expose people to situations that trigger fear and anxiety, in a safe and controlled space. Then, hopefully, they learn to better manage those situations in real life. Less is known about whether virtual reality can help with substance use disorders. But there has been some evidence that it can reduce people's craving for tobacco and alcohol, according to Han.

For the new study, his team recruited 12 patients being treated for alcohol dependence. All went through a week-long detox program, then had 10 sessions of virtual-reality therapy—done twice a week for five weeks.

The sessions involved three different virtual scenes—one in a relaxing environment; another in a 'high-risk' situation in which the patients were in a restaurant where other people were drinking; and a third, 'aversive,' situation.

In that aversion scene, patients were surrounded by the sights, sounds and smells of people getting sick from too much alcohol.

Before they began the program, all of the patients underwent (PET) and computerized tomography (CT) brain scans, which allowed the researchers to study the patients' brain metabolism. It turned out that, compared with a group of healthy people, the alcohol-dependent patients had a faster metabolism in the brain's limbic circuit—which indicates a heightened sensitivity to stimuli, like alcohol. After the virtual-reality therapy, however, the picture changed. Patients' revved-up brain metabolism had slowed—which, Han said, suggests a dampened craving for alcohol.

According to Han, the therapy is a promising approach to treating . That is partly because it puts patients in situations similar to real life and requires their active participation, he said. The sessions are also 'tailor-made' for each individual, he added. However, larger, long-term studies are still needed to show whether virtual reality ultimately helps remain abstinent and avoid relapses.

Explore further: Breakdown in gut barriers to bacteria may promote inflammation and craving in alcoholics

More information: Son, J.H., Lee, S.H., Seok, J.W., Kee, B.S., Lee, H.W., Kim, H.J., Lee, T.K., Han, D.H. (July 2015). Virtual reality therapy for the treatment of alcohol dependence: A preliminary investigation with positron emission tomography/computerized tomography. Journal of Studies on Alcohol and Drugs, 76(4), 620-627.

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