You may have seen various news stories talking about wine helping to lower the risk of brain diseases such as dementia. New analysis has shed further light on this theory, Ideal Wine Company reviews this.
While lots of studies seemed to show that wine in particular may lower the risk of dementia, scientists weren’t clear why. Meta-analysis of many of these studies has helped to clarify some of the results for scientists, although a full consensus is yet to be reached by the entire community.
Moderate alcohol consumption
The studies so far show that a low to moderate intake of wine on a daily basis could have some benefits for the brain. Sadly, scientists haven’t given the go-ahead to drink lots of bottles regularly!
Researchers have been working on the potential side effects of alcohol on the human brain over the last few years. Specifically, they have been looking at both the positive and negative effects wine could have on the risk of developing conditions like dementia.
As is often the case with scientific research, there is so much information out there, using different methodologies and coming up with varied results that it’s difficult to make sense of it all.
Meta-analysis by Chinese scientists
To try and throw some light on the issue, scientific researchers from Ocean University and Qingdao Municipal Hospital in China, recently completed meta-analysis of the data.
They analysed 11 studies on ‘all cause dementia’ (ACD) featuring 73,330 patients, as well as five Alzheimer’s dementia studies using data from 52,715 patients, and four vascular dementia studies featuring 49, 535 patients.
And their conclusions? They found that it does indeed look like a light to moderate intake of alcohol (this equates to just one drink a day or less), does indicate a lower risk of ACD than not drinking at all. However, they also found that heavier drinkers (more than three to four drinks a day, or 23 a week) face a higher risk of dementia.
Good news for wine lovers?
Seven of the studies looked at the kinds of alcohol consumed, and ended up concluding that wine is the only alcoholic drink that seems to have some protective effects against dementia. Again, this only concerns light to moderate intake. Heavy drinkers, particularly of beer, appear to have a higher risk of dementia.
As to why wine appears to protect the mind, the International Scientific Forum on Alcohol Research (ISFAR) critiqued the meta-analysis and discussed the findings. ISFAR consists of doctors, professors, public health specialists and scientists who are tasked with looking at the link between alcohol and health issues. They concluded that the antioxidant and anti-inflammatory properties of the polyphenols that can be found in wine could be contributing to the results.
They also suggested other possibilities, including the fact that ethanol pushes acetylcholine to release in the brain and this is associated with improved cognitive functions. Overall the ISFAR concluded that the analysis was commendable for its large size, but that much more research needs to take place before we fully understand the complicated links between dementia and alcohol.
And as for the reasons why wine specifically appears to protect the brain, they concluded that it’s ‘still poorly understood’. The best way, according to experts on the panel, to enjoy the benefits of drinking wine is to drink it moderately, along with your food, throughout the week.