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Green tea has a lot of benefits to those that have kidney diseases. Green tea can improve kidney filtration function so as to promote urination and at the same time discharge more wasteful products out of the kidneys and bloodstream.
Things to Note. 1  Limited evidence suggests that water extracts of the leaves (sold as an anti-diabetic tea) are harmful to the kidneys, due to a group of molecules not known to exist in the tuber (where syrup is derived from). At this moment in time, it would be prudent to avoid drinking tea made from yacon leaves.