A team of Swiss researchers believe that consuming black tea can prevent or at least reduce the chances of developing type 2 diabetes, a condition that is often related to obesity and affects around two million people in the UK, a study published in the journal BMJ Open revealed.
Researchers from Data Mining International in Geneva, Switzerland, monitored the prevalence of a series of health conditions, including type 2 diabetes, and their possible relation to black tea in 50 different countries.
There was an obvious link between the lower rate of diabetes cases in countries with increased consumption of black tea, but none of the other conditions studied were affected. Black tea is especially popular in Ireland, where people drink 2 kg every year, followed by the UK and Turkey, whereas South Korea, Brazil and China ranked at the bottom of the table in terms of average consumed quantities.
Dr Ariel Beresniak, who led the research, explained that the findings confirm what previous studies have already suggested – black tea is a powerful natural method for reducing obesity and the risk of type 2 diabetes. Other studies have also found evidence that green tea is useful in type 2 diabetes prevention.
According to the analysis, both black and green tea contain large amounts of compounds, called flavonoids, which are believed to have strong anti-inflammatory qualities. However, those compounds are more complex in black tea, due to the process of fermentation which takes place during its production.