A recent recall involved shrimp imported from Indonesia, which were found to potentially contain cesium-137 (Cs-137) at levels below the FDA's legal threshold of 1,200 Bq/kg. While some batches of the shrimp exhibited elevated radiation levels, the measurement was around 68 Bq/kg, similar to the radiation emitted by bananas, which is primarily due to the natural presence of potassium-40 (K-40). The incident has sparked discussions on the adequacy and reasoning behind radiation checks, especially since many foods contain natural radioactive isotopes that go unchecked. Despite concerns over the contamination, research indicates that Cs-137 levels in shrimp are comparable to those found in other animal products, and that most radionuclides do not bioaccumulate in humans. Current government radiation exposure regulations are often conservative, based on the linear no-threshold model despite recent studies suggesting that doses below certain levels may carry no measurable risk. The debate continues on the necessity of strict limits on radioactive food when the risks appear minimal and the exposure from natural sources, such as the K-40 in bananas, is prevalent. The notion of accepting risks in various contexts yet maintaining a strong aversion to radiation is under scrutiny.
Wed, 17 Sep 2025 14:00:00 GMT | Hackaday