Dark Chocolate May Contain Harmful Heavy Metals, Study Finds

A new study from George Washington University reveals that nearly half of dark chocolate products sold nationwide contain excessive levels of heavy metals, NBC News reported yesterday.

Published in Frontiers in Nutrition, the research examined over 70 products from retailers like Whole Foods and Amazon. Findings indicate that 43% exceeded acceptable lead levels, while 35% surpassed cadmium limits, based on California’s Prop 65 guidelines. Although no products exceeded arsenic levels, the study highlights the difficulty of avoiding heavy metals in diets, as they can accumulate in the body over time.

Lead and cadmium can enter chocolate through soil and manufacturing processes. Researchers advise limiting dark chocolate intake to one ounce daily to reduce exposure. Interestingly, organic cocoa products were found to have higher levels of these metals.

Experts emphasize a diverse diet to mitigate risks, noting that “organic” does not guarantee safety from toxic metals. The FDA has no established limits for cadmium or arsenic in chocolate, complicating consumer safety efforts.