Drinking Black Tea Regularly Can Reduce Diabetes Prevalence
Diabetes type 2 is a chronic disease characterized by high blood sugar levels, and is a condition that is now becoming a global health concern. The International Diabetes Federation reports that the global prevalence of diabetes has grown six-fold over a few decades and it is estimated that the number of people diagnosed with the disease in 2010 will rise from 285 million to 438 million by the year 2030.
Studies to prevent and treat diabetes abound, and recent studies have shown that certain natural substances like green tea may have beneficial effects. Green tea contains flavonoids or catechins which are believed to have anti-inflammatory effects. It has also been found that through a process of fermentation, green tea turns into black tea, which activates other flavonoids like thearubigins and theaflavins that may have additional health benefits.
The study involved analysis of data on black tea consumption in 50 countries around the world and the prevalence of diabetes and other chronic diseases such as cancer and heart disease in these countries. They used a statistical method called principal component analysis to evaluate the effect of black tea consumption on the different health conditions at the population level. The results showed that the common beverage had an impact on diabetes, but not on other diseases. Further statistical analysis confirmed the link between black tea and diabetes prevalence rates, showing a strong linear correlation between lower diabetes rates in countries where black tea consumption was high. These countries include Ireland, which topped the list, followed by the United Kingdom and Turkey. Very low black tea consumption was reported in Mexico, Morocco, China, Brazil, and South Korea.
BMJ-British Medical Journal. Low prevalence of type 2 diabetes among regular black tea drinkers. ScienceDaily.