As examples cited by Consumer Reports, an ounce of Lindt's Excellence Dark Chocolate 70% Cocoa or Dove's Promises Deeper Dark Chocolate 70% Cacao exceeds the acceptable cadmium levels, while an ...

Q: I’ve been hearing that dark chocolate can be high in heavy metals ... Continuing exposure to cadmium, for example, can cause a buildup of the metal in the kidneys, leading to kidney damage.