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
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Learn More About Supplements and Kidney Stones
Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins? >>
I was surprised when my doctor told me to stop taking supplements because my kidney function was low. But after stopping the supplements, my kidney function returned to normal. Can taking a lot of supplements really damage the kidneys? >>
I recently purchased some matcha green tea powder claiming to contain up to "137 times the EGCG" that is in brewed green tea. However, the label does not state an actual amount of EGCG and the company would not provide me with any analysis. Is the label true? >>
Can taking certain forms of potassium, such as potassium citrate, reduce my chances of getting kidney stones? I've read a study that says it can, but it's unclear how much I should take. >>
Is it possible to take too much vitamin C? >>
Is it safer to get calcium from foods than from supplements? How about from calcium-fortified orange juice and non-dairy milks? >>