Researchers in China have found that drinking at least four cups of black, green or oolong tea may reduce the risk of developing type 2 diabetes.
Drinking at least four cups of these teas per day was associated with a 17% lower risk of developing the condition over an average of 10 years, according to Research Presented at the annual meeting of the European Society for the Study of Diabetes in Stockholm.
“While more research is needed to determine the exact dose and mechanisms behind these observations, our findings suggest that drinking tea is beneficial in reducing the risk of type 2 diabetes, but only at high doses,” said lead author Xiaying Li, From Wuhan University of Science and Technology, He said in a press release.
For the first time, researchers studied 5,199 adults with no history of type 2 diabetes from the China Health and Nutrition Survey. The survey examines the economy, social factors and health metrics of the population in nine Chinese provinces, CNN reported. The adults were recruited in 1997 and tracked until 2009.
But the researchers found that people who reported drinking tea and those who didn’t had a similar risk of developing type 2 diabetes.
But when researchers conducted a systematic review of 19 cohort studies, which included 1,076,311 participants from eight countries, they found an association between those who drank more tea and a lower risk of type 2 diabetes. The countries included China, the United States, Japan, Finland, the United Kingdom, Singapore, the Netherlands, and France.
In addition to those who drank at least four cups of tea had a 17% lower risk of developing the condition, those who drank 1 to 3 cups of tea per day reduced their risk of developing type 2 diabetes by nearly 4%, compared to adults. Who ate did not drink tea. Links are found regardless of gender, place of residence, or additional factors.
“It is possible that certain components in tea, such as polyphenols, may reduce blood glucose levels, but a sufficient amount of these bioactive compounds may be needed to be effective. This may also explain why there is no association between tea drinking and diabetes from Type 2 in our cohort study, because we did not look at increased tea consumption.
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Polyphenols are a substance found in many plants and have antioxidant properties. According to the National Cancer Institute.
The researchers noted that they could not rule out the influence of lifestyle factors and other health factors among the subjects. The researchers did not immediately confirm details about the inclusion of sugar, milk or other common tea additives in the research.
The research was not published in a scientific journal. The results were reviewed by the conference organizers. USA TODAY contacted researchers for additional information.
This is not the first time that tea consumption has been linked to health benefits in recent research. A study published in the peer-reviewed European Journal of Preventive Cardiology suggested that people who drink tea three or more times a week may have a lower risk of cardiovascular disease.