Lead and Cadmium Found in Dark Chocolate, But Risks Considered Low

Researchers from the George Washington University School of Medicine and ConsumerLab.com have found that while single servings of most cocoa-based products contain heavy metals, the levels are generally too low to pose a health risk. The study, which analyzed 72 cocoa-containing products, revealed that 70 of them fell below the Food and Drug Administration's (FDA) limits for lead contamination. However, the researchers noted that larger portions could exceed the stricter limits set by California's Proposition 65 (Prop 65).

The study also highlighted that dark chocolate, particularly organic versions, contained higher levels of lead and cadmium, two neurotoxic metals linked to cancer and other health issues. Of the products tested, 43% exceeded Prop 65's allowable dose level for lead, and 35% exceeded its cadmium limits. Despite these findings, the National Confectioners Association maintained that chocolate and cocoa products are safe to eat in moderation. The researchers emphasized the importance of further testing to ensure consumer safety.