A fresh study reveals that indulging in a daily cup of tea can significantly reduce the risk of developing Type 2 diabetes, slashing it by over 25%. In comparison to those who abstain from tea, individuals who incorporate tea into their daily routine exhibit a remarkable 28% lower likelihood of receiving a Type 2 diabetes diagnosis. Moreover, their susceptibility to prediabetes diminishes by 15%.

This study posits that tea consumption enhances the excretion of glucose in urine, leading to enhanced insulin resistance and improved regulation of blood sugar levels. Considering that in the United States, one in ten individuals is diagnosed with diabetes, predominantly Type 2 diabetes due to unhealthy lifestyles, these findings carry substantial significance.

Conducted collaboratively by the University of Adelaide in Australia and Southeast University in China, the research underscores the noteworthy effect of dark tea, which reduces the risk by an impressive 47%. The researchers attribute the positive impact of dark tea to its unique production process involving microbial fermentation. This process potentially yields bioactive compounds such as alkaloids, free amino acids, polyphenols, polysaccharides, and derivatives, known for their potent antioxidant and anti-inflammatory properties. These compounds enhance insulin sensitivity, optimize pancreatic beta cell performance, and influence gut bacteria composition. While dark tea exhibits these benefits most prominently, other types of tea also offer them to some extent.

The study encompassed 1,923 adults (562 men and 1,361 women aged 20 to 80) across eight provinces in China, including 436 with diabetes, 352 with prediabetes, and 1,135 with normal blood glucose levels.

Associate Professor Tongzhi Wu of the University of Adelaide, in a media release, commented, “The significant health benefits of tea, including reduced risk of cardiovascular disease and Type 2 diabetes, have been reported in numerous studies in recent years, but the mechanisms responsible for these benefits have remained unclear.”

“Our findings suggest that habitual tea consumption may protect blood sugar management by increasing glucose excretion in urine, improving insulin resistance, and thereby enhancing blood sugar control. These benefits are most pronounced in daily dark tea drinkers.”

The researchers clarify the distinction between black tea and dark tea, emphasizing that tea classification, particularly in Asia, is based on processing methods. For instance, green tea does not undergo fermentation, while the unique characteristic of dark tea is microbial fermentation.

Taking into account factors such as age, gender, ethnicity, BMI, cholesterol levels, alcohol consumption, smoking habits, family history of diabetes, and regular exercise, the study finds that dark tea drinkers experience a 53% reduced risk of prediabetes. Participants in the study ranged from those who rarely drank tea to those who consistently consumed a particular type of tea. They provided detailed information on their tea consumption frequency and type.

Individuals with diabetes tend to exhibit increased renal glucose reabsorption, meaning their kidneys retain more glucose, which is not excreted in urine, resulting in elevated blood sugar levels. The study’s analysis indicates that daily tea consumption correlates with heightened urinary glucose excretion and reduced insulin resistance compared to individuals who do not consume tea.

Professor Wu adds, “These findings suggest that the actions of bioactive compounds in dark tea may directly or indirectly affect glucose excretion in the kidneys, to some extent mirroring the effects of sodium-glucose co-transporter-2 (SGLT2) inhibitors, a novel class of anti-diabetic drugs that not only prove effective in preventing and treating Type 2 diabetes but also exhibit substantial protective effects on the heart and kidneys.”

Although this research holds promise, the scientists acknowledge that observational studies cannot definitively establish causation. They are currently conducting a double-blind, randomized trial to validate their findings, and they also acknowledge the potential influence of other lifestyle and physiological factors on the study’s outcomes.

Topics #black tea #cup od tea #dark tea #green tea #heart #kidney #reduce risk #Type 2 diabetes