Although alcohol abuse is known to be harmful, a new study reveals that even low levels of consumption can cause cerebral damage.

A team of researchers from the US has linked alcohol consumption to reduced cerebral perfusion (blood circulation) and thinning of the cortex – the part of the brain responsible for higher thought processes.

What stands out is that these signs were observed in people who stayed within the limits considered “safe”: up to 60 drinks per month for men and 30 for women (one drink counts as 14 grams of pure ethanol, or roughly one bottle of beer, one small glass of wine, or one shot of brandy).

Although these limits have long been recommended, the latest US Dietary Guidelines no longer specify a safe daily threshold.

In addition, researchers found a strong correlation between drinking, age and thinning of the outer layer of the brain. The findings suggest that the effects of alcohol may accumulate over time.

Consumption that is considered “low risk” may have consequences for the integrity of cortical tissue, especially with age. The study included 45 healthy adults, ages 22-70, with no history of addiction or heavy drinking in the past year.

The average consumption of the participants was 21 drinks per month throughout their lives. Using MRI scans, the scientists observed that alcohol had a greater effect on perfusion than brain volume. As in the rest of the body, strong blood flow to the brain is vital for delivering oxygen and nutrients, as well as removing toxic waste.

Researchers suggest that oxidative stress – a type of “biological consumption” stimulated by alcohol – is the key factor in this process. Although the study has its limitations, such as self-reporting of drinking amounts, it fits with a growing trend of medical research that questions the existence of a “safe” level of alcohol.

The latest official guidelines in the US have changed the tone: instead of giving a number of glasses that are allowed, they emphasize that people should consume as little alcohol as possible for better overall health. /tesheshi.com/

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Source: prizrenpost