Diabetes For centuries, mulberry tea has been used as a treatment for diabetes mellitus in Asia. One of the most unique qualities of the mulberry leaf tea is its ability to prevent sugars from entering your bloodstream Researchers in Japan found that mulberry leaves contain compounds that inhibit intestinal enzymes from passing sugars into the bloodstream. This inhibitor compound known as 1-deoxynojirimycin(DNJ), can only be extracted from the mulberry leaf. By preventing large amounts of monosaccharide from entering into circulation, mulberry tea helps prevent and fight diabetesr