There's going to be a lot more of this kind of news emerging. CNN:
As Japanese authorities took bold new steps Saturday to tackle the crisis at the Fukushima Daiichi nuclear power plant, new concerns emerged about the impact that already emitted radioactive materials have had on the food supply.
Chief Cabinet Secretary Yukio Edano told reporters that abnormally high levels of radiation had been detected in some, but not all tested samples of spinach and milk from the Japanese prefectures of Fukushima and Ibaraki.
The measurements exceeded the limits stipulated by Japan's food safety law, though Edano insisted they weren't extremely high. If a person consumed these products continuously for a year, he said, they'd take in the same amount of radiation as a single CT scan. The U.S. Food and Drug Administration equates that to roughly 7 millisieverts, over double what a person in an industrialized country naturally gets in a year.
