Occasional glass of red may have its benefits, scientific study shows

The occasional glass of red wine could be linked to better gut health, according to a new study.

Lower levels of both obesity and “bad” cholesterol may also be a benefit of having the odd glass of red, after an experiment on more than 900 twins showed an increase in gut microbiota diversity – a sign of gut health – compared to those who drank other types of alcohol.

Scientists at King’s College London were looking into the effects of beer, cider, red wine, white wine and spirits on the gut microbiome, the micro-organisms found in the digestive tracts of humans.

They found that the gut microbiome of red wine drinkers was more diverse compared to those who had other drinks, which researchers speculate could be due to a higher amount of defence chemicals called polyphenol that act as an antioxidant.

“While we have long known of the unexplained benefits of red wine on heart health, this study shows that moderate red wine consumption is associated with greater diversity and a healthier gut microbiota that partly explain its long-debated beneficial effects on health,” Dr Caroline Le Roy, first author of the findings, said.

Results from the 916 UK female twins who participated in the research also matched up to three other groups tested in the UK, the US and the Netherlands.

However, professionals have also warned that the positives should still be weighed up against the negative impacts of alcohol.

“No doctor would recommend drinking on medical grounds, as any potential benefits of red wine polyphenols should be considered alongside alcohol’s links to over 200 health conditions, including heart disease and cancers as identified in the Chief Medical Officer’s guidelines review,” Dr Sadie Boniface, research co-ordinator at the Institute of Alcohol Studies, said.

“Polyphenols are also available from a range of other foods besides red wine.”