Of note, this is not the first report in this regard. Indeed, in 2005, Itoh and colleagues noted significant decreases in calcium oxalate deposits and in urinary oxalate levels among stone-forming rats given green tea as a drink or powder.1
At present, there are no effective, consistent means for lowering urinary oxalate levels among urolithiasis patients with hyperoxaluria. As such, I am anxiously awaiting clinical studies to confirm whether similar beneficial affects occur in humans.
By Ralph V. Clayman, M.D.
References:
J. Endourology 20: 356-362, May 2006
J. Urology 173: 271, 2005.
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