Chocolate Metal Toxins

Chocolate Metal Toxins

3 Safest (and a couple of the most dangerous) Dark Chocolate Bars – Heavy Metals

Consumer Reports published a list of the safest and most dangerous dark chocolate bars containing the heavy metals lead and cadmium.

Lead and cadmium are metals found in soils, so cacao beans naturally take up these toxins. But most of the lead issue seems to occur after harvesting while the beans are drying in the open air or during the manufacturing process.

A quick check of medical journals found high cadmium and lead exposure and levels increase the risk of lung, kidney, breast, prostate, colon, pancreas cancers.

A low zinc level increases the risk of dying from higher cadmium levels. [i] It seems zinc helps balance the cancer risks for several toxic metals including cadmium. If you can’t get a blood test for zinc, ask your local compounding pharmacy for a zinc taste test. An example is 

Consumer Reports used California's maximum allowable dose level (MADL) for lead (0.5 micrograms) and cadmium (4.1mcg). Shown are the percentages of the MADL supplied in an ounce of each chocolate.

According to Consumer Reports

The 3 safest dark chocolate bars:
Mast 80% Organic Cocoa
Lead 14% Cadmium 40%

Taza Chocolate 70% Organic
Lead: 33% Cadmium 74%

Ghirardelli 86% Intense Dark Cacao
Lead 36% Cadmium 39%

Highest Cadmium

Trader Joe’s 895% Cacao
Lead 127% Cadmium: 229%

Highest Lead

Special Dark Mildly Sweet Chocolate
Lead: 265% Cadmium: 30%

Get the full story at:

Lead and Cadmium Could Be in Your Dark Chocolate - Consumer Reports

References Include

[i] Lin YS, Caffrey JL, Lin JW, et al. Increased risk of cancer mortality associated with cadmium exposures in older Americans with low zinc intake. J Toxicol Environ Health A. 2013;76(1):1-15. doi:10.1080/15287394.2012.722185