Dark chocolate and similar cocoa products are contaminated with lead and cadmium, two neurotoxic metals linked to cancer, chronic disease, or reproductive and developmental issues, especially in children. A new study found that even organic dark chocolate contains high levels of these metals.
As natural elements in the Earth’s crust, lead, cadmium, and other heavy metals are present in soil where crops are grown. Some crop fields contain more toxic levels than others due to overuse of metal-containing fertilizers and industrial pollution.
The study analyzed 72 consumer cocoa products for lead, cadmium, and arsenic levels. It found that 43% exceeded the maximum allowable dose level for lead and 35% exceeded the limit for cadmium. No significant levels of arsenic were detected.
Experts say that while there is no safe level of lead, especially for children, adults who limit their intake to small amounts should not be afraid of eating chocolate. However, those with medical conditions, pregnant women, or young children should be aware of the risk and consider it in context with other sources of exposure.
Consuming low levels of cadmium over time can damage kidneys, making it a probable human carcinogen. For sensitive individuals, medically compromised people, and pregnant women, the risk is higher. Children can absorb about 50% of ingested lead after a meal and up to 100% on an empty stomach.
Source: https://edition.cnn.com/2024/07/31/health/cacao-dark-chocolate-lead-heavy-metals-wellness/index.html