New Delhi, March 2 (ANI): A new research has found that drinking a cup of black tea can prevent type-2 diabetes in humans. According to the research black tea restrains the body from absorbing glucose sugars, excess of which causes type-2 diabetes, a daily reported. The researchers said that their findings suggested that black tea had potential for carbohydrate hydrolyzing enzyme inhibition and this activity depended on high molecular weight phenolic compounds. The researchers also mentioned that just like green tea, black tea also possesses anti diabetic activity.