Mind-boggling numbers, but I'm sure they will be dismissed as "no effect on health" because the man is in his 70s.
Another man was found with 11,191 becquerels. Their wives were also found with high levels of radioactive materials in their bodies.
Why? They have been eating food that they grow.
From Mainichi Shinbun (8/22/2012; link added) reporting the news that the health section at Asahi Shinbun reported in early August:
Two men in Fukushima with internal radiation exposure from eating home-grown vegetables
A survey by the Tokyo University Institute of Medical Science has revealed that two men in their 70s in Fukushima Prefecture who have been eating home-grown vegetables that are not sold to the market have internal radiation exposure with relatively high amount of radioactive materials, exceeding 10,000 becquerels. One of them has about 20,000 becquerels, which would translate to 0.85 millisievert [internal] exposure in one year. It is still lower than the internal radiation exposure limit from food (1 millisievert/year) set by the national government. Dr. Masaharu Tsubokura, who conducted the survey, says, "It may not be the level that would affect health, but I would like people to test the food they grow before eating them."
One of the two men lives in Kawamata-machi, and the other lives in Nihonmatsu City. They were tested for internal radiation exposure by using the Whole Body Counter to measure radioactive cesium (cesium-134 and -137) in their bodies in July and August this year. The man in Kawamata-machi was found with 19,507 becquerels, and his wife was found with 7,724 becquerels. The man in Nihonmatsu City was found with 11,191 becquerels, and his wife 6,771 becquerels. For all of them, it is assumed that they have ingested radioactive cesium released by the Fukushima I Nuclear Power Plant accident through food.
The husband and wife in Kawamata-machi have been eating shiitake mushrooms they grow on the logs from Namie-machi [in Fukushima Prefecture], bamboo shoots harvested near their home, and dried persimmons. From the mushrooms, over 140,000 becquerels/kg of radioactive materials [cesium] was found. The couple in Nihonmatsu City has been eating the vegetables given by the couple in Kawamata-machi.
Shiitake logs from Namie-machi... It seems no one bothered to tell them that Namie-machi is probably more heavily contaminated than some of the towns closer to the Fukushima plant. Being in their 70s, their news sources are likely to be the traditional media such as newspapers and TV.
Kawamata-machi is located just west of Iitate-mura, another heavily contaminated location in Fukushima.
Dr. Tsubokura says in the original Asahi article that these levels of internal radiation exposure are seen in Belarus.
However, one of the strange things I've noticed since April 1 this year when the new safety standard of 100 Bq/kg of radioactive cesium was put in place is that people in general don't care much about food contamination any more. It was a big deal, literally up until March 31, the last day under the provisional 500 Bq/kg safety level. If a food item was found with double-digit cesium per kilogram, people were worried.
But now, with the safety limit of 100 Bq/kg and the detection limit of 20 bq/kg using NaI scintillation survey meters (which I think is too high for comfort), less and less people care if a food item is found with, say 60, 70 becquerels/kg of radioactive cesium. It doesn't make a headline news any more (though it is duly reported in the media).
Instead, they worry about a nuclear power plant in Fukui Prefecture, boy-wonder mayor of Osaka, Friday "single issue" protests at the Prime Minister's Official Residence in Tokyo.
They are good ways to not have to deal with the issues at hand, which remain, in my personal opinion, radioactive materials from the nuclear accident in the environment and how to deal with them.