Many chocolates contain heavy metals: New research results
Illustrative photo (Freepik)
Many cocoa products sold in the United States contain alarming levels of toxic heavy metals, according to research from George Washington University.
Research results
Over eight years, researchers analyzed 72 cocoa-based products, including dark chocolate, which is often touted as heart-healthy.
They found that 43% of the products contain levels of lead that exceed recommended amounts, while 35% exceed limits for cadmium.
Surprisingly, researchers reported that organic products have higher levels of lead and cadmium than non-organic ones. The contamination could have occurred from the soil or during production.
One serving of these treats might not pose a significant health risk, but multiple servings could already pose a health hazard.
"We all love chocolate but it’s important to indulge with moderation as with other foods that contain heavy metals including large fish like tuna and unwashed brown rice," said study leader Leigh Frame.
"While it's not practical to avoid heavy metals in your food entirely, you must be cautious of what you are eating and how much," he added.
Which foods contain heavy metals and why it’s harmful
High levels of lead can be found in shellfish, meat products, or herbal supplements grown in contaminated soil or imported from countries with less regulation, such as China, Nigeria, India, and Egypt.
Exposure to lead can cause high blood pressure and health problems affecting the brain, kidneys, and reproductive system. Symptoms of lead poisoning include headaches, stomach cramps, constipation, muscle/joint pain, sleep problems, fatigue, irritability, and loss of libido.
Cadmium poisoning can lead to chills, fever, and muscle pain. Chronic exposure can cause kidney, bone, and lung diseases.
Some seaweeds, particularly hijiki used in salads, contain high levels of cadmium, too.
