However, a new study showed that a decrease in brain volume is a risk factor for alcohol dependence, Biological Psychiatry reports.
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It turned out that there are genetic factors that lead to a decrease in brain size and the development of alcohol dependence. Researchers believe this may be useful in detecting the extent of alcohol dependence prematurely.
Scientists analyzed the brain images of twins, from infancy to adulthood, and found genetically determined reductions in the amount of gray matter in the frontal cortex and islets, which were indicators of the future development of addiction to alcohol.
To confirm the genetic relationship between brain size and addiction to alcohol, the group examined data from single and twin twins with different histories of alcohol consumption.
One of the twin twins who loved drinking had less gray matter in his brain. As for identical twins, the study did not reveal any differences, but they both looked very drinkable.
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