HealthNews

Different brain areas linked to smoking and drinking

BRUSSELS–– A recent worldwide study found that different brain areas relate to smoking and drinking which may cast light on the prevention and treatment of alcohol and nicotine abuse.

International researchers from China’s Fudan University, the University of Warwick in the U.K., and other research institutions studied brain functional magnetic resonance images from two brain scan databases from the United States and Europe.

The scientists informed the latest issue of journal eLife that the medial orbitofrontal cortex, a brain area associated with rewards, has higher functional connectivity in drinkers. It suggests that drinkers are attracted to alcohol for the experience of pleasure caused by the reward system in the brain.

The group’s study suggests that smokers had low functional brain connectivity in general, especially in the lateral orbitofrontal cortex, a brain region linked to impulsive behavior. It indicates that smokers need the stimulating effect of nicotine to increase their overall brain connectivity.

The Human Brain

The study also revealed that the changes in functional brain connectivity were detectable even when participants smoked only a few cigarettes or drank a small amount of alcohol every day.

Feng Jianfeng, a corresponding author of the study and director of the Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, said the study could have important public health implications as both drinking and smoking affect a large part of the global population.

Data and information from the World Health Organization say over 1.1 billion people smoke tobacco in the world, and more than 7 million people die each year due to the use of tobacco.

An estimated 2.3 billion people worldwide are current drinkers, and excessive drinking killed more than 3 million people in 2016.

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