Initial Posting: 12/19/2015    Last Update: 8/2/2017
Question: After developing kidney stones, I was told to avoid tea -- but recently I've heard that green tea might actually be helpful for kidney stones. Is that true?
Answer: As discussed in the Green Tea Review, both black and green tea contain oxalate, high levels of which can contribute to the development of kidney stones in some people. However, for a number of reasons, this is not much of a concern with green tea (which may even help), and there are even ways to minimize the kidney-stone risk when drinking black tea. Get the details in the "Concerns and Cautions" section of the Green Tea Review >>
Be aware that too much calcium or vitamin C from supplements may increase the risk of kidney stones.
For information about other supplements that may be helpful or harmful regarding kidney stones, see the Encyclopedia article about Kidney Stones.