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Gender Differences Found in Long Term Alcohol Use

September 5, 2017

Scientists have found that brain functions in young men and women are changed by long-term alcohol use, but that these changes are significantly different in men and women. This indicates not only that young people might be at increased risk of long-term harm from alcohol use, but also that the risks are probably different in men and in women, with men possibly more at risk. This work is presented today at the ECNP meeting in Paris.

 

A Finnish research group worked with 11 young men and 16 young women who had a heavy 10-year alcohol use, and compared them with 12 young men and 13 young women who had little or no alcohol use. All were between 23 to 28 years old at the time the measurements were taken. The researchers examined the responses of the brain to being stimulated by magnetic pulses -- known as Transcranial Magnetic Stimulation (TMS), which activates brain neurons. The brain activity was measured using EEG (electroencephalogram).

 

Previously, the researchers had found that heavy alcohol users showed a greater electrical response in the cortex of the brain than non-alcohol users, which indicates that there had been long-term changes to how the brain responds. This time, they found that young men and young women responded differently, with males showing a greater increase in electrical activity in the brain in response to a TMS pulse. As researcher Dr Outi Kaarre (University of Eastern Finland and Kuopio University Hospital, Finland) said:

 

"We found more changes in brain electrical activity in male subjects, than in females, which was a surprise, as we expected it would be the other way around. This means that male brain electrical functioning is changed more than female brains by long-term alcohol use"

The EEGs also allowed the researchers to show that male brains have greater electrical activity associated with the GABA (gamma-amino butyric acid) neurotransmission than do female brains.

 

To read more click here.

 

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