Heavy Metals in Food

Heavy metals like arsenic, cadmium, and lead are naturally found in the soil, but the widespread use of leaded gasoline, lead-based pesticides, and other manufacturing processes have contributed to higher levels in products that are farmed and fished, and even your tap water. That’s why for decades CR has tested a wide variety of foods, drinks, and supplements for heavy metals: So you can choose products with lower levels and help keep your family safe.

Updated September 17, 2026