The Food and Drug Administration ( FDA) warned Americans that some shrimp products sold at Walmart may contain a radioactive substance known as Cesium-137. Newsweek reached out to Walmart for comment via email. The FDA warned that repeated low-dose exposure to Cesium-137 includes an "elevated risk of cancer" caused by DNA damage.

Some packages of Great Value frozen shrimp sold at Walmart are at risk for potential for Cesium-137 contamination, the FDA says.

The US Food and Drug Administration on Tuesday urged the public not to eat certain bags of frozen raw shrimp sold at Walmart, citing concerns about unsanitary conditions and radioactive contamination found in shipments from the same supplier.