Cocoa and chocolate are high in oxalates, naturally occurring compounds that can contribute to the formation of the most common type of kidney stone in susceptible individuals. Cocoa powders tend to contain a higher concentration of oxalates than chocolate bars, but a single, typical serving of either cocoa or chocolate can contain higher amounts of oxalates than people who are following a low-oxalate diet should consume in a day. For more details, see the Concerns and Cautions
section of the Cocoa and Dark Chocolates Review
Be aware that some turmeric
and cranberry supplements
increase urinary oxalate levels, and getting too much vitamin C
from supplements may also increase the risk of kidney stones in some people.
Also see the Encyclopedia article about Kidney Stones
for more information.