An August 1 press release from Japan's MHLW said no radioactive materials have been detected in the tap water of Fukushima prefecture, according to a survey conducted by the Japanese government's Nuclear Emergency Response Headquarters. The government defines no detection as "no results exceeding the 'Index values for infants (radioactive iodine)'," and says "in case the level of radioactive iodine in tap water exceeds 100 Bq/kg, to refrain from giving infants formula milk dissolved by tap water, having them intake tap water … "Yet, on June 27, results were published from a study that found 15 residents of Fukushima prefecture had tested positive for radiation in their urine. Dr Nanao Kamada, professor emeritus of radiation biology at Hiroshima University, has been to Fukushima prefecture twice in order to take internal radiation exposure readings and facilitated the study."The risk of internal radiation is more dangerous than external radiation," Dr Kamada told Al Jazeera. "And internal radiation exposure does exist for Fukushima residents."According to the MHLW, distribution of several food products in Fukushima Prefecture remain restricted. This includes raw milk, vegetables including spinach, kakina, and all other leafy vegetables, including cabbage, shiitake mushrooms, bamboo shoots, and beef.The distribution of tealeaves remains restricted in several prefectures, including all of Ibaraki, and parts of Tochigi, Gunma, Chiba, Kanagawa Prefectures.Iwate prefecture suspended all beef exports because of caesium contamination on August 1, making it the fourth prefecture to do so.
Due to caesium contaminated straw, beef exports have been banned in four Japanese prefectures [EPA]
Jyunichi Tokuyama, an expert with the Iwate Prefecture Agricultural and Fisheries Department, told Al Jazeera he did not know how to deal with the crisis. He was surprised because he did not expect radioactive hot spots in his prefecture, 300km from the Fukushima nuclear plant."The biggest cause of this contamination is the rice straw being fed to the cows, which was highly radioactive," Tokuyama told Al Jazeera. Kamada feels the Japanese government is acting too slowly in response to the Fukushima disaster, and that the government needs to check radiation exposure levels "in each town and village" in Fukushima prefecture."They have to make a general map of radiation doses," he said. "Then they have to be concerned about human health levels, and radiation exposures to humans. They have to make the exposure dose map of Fukushima prefecture. Fukushima is not enough. Probably there are hot spots outside of Fukushima. So they also need to check ground exposure levels." Caldicott said people around the world should be concerned about the ongoing nuclear crisis at the Fukushima Daiichi plant. Radiation that continues to be released has global consequences.More than 11,000 tonnes of radioactive water has been released into the ocean from the stricken plant.
Scientists warn that tuna caught off the Pacific coastal prefecture in northern Japan are now at risk of being radioactive [EPA]
"Those radioactive elements bio-concentrate in the algae, then the crustaceans eat that, which are eaten by small then big fish," Caldicott said. "That's why big fish have high concentrations of radioactivity and humans are at the top of the food chain, so we get the most radiation, ultimately."On August 6, the 66th anniversary of the US nuclear bombing of Hiroshima, Japanese Prime Minister Naoto Kan said: "Regarding nuclear energy, we will deeply reflect over the myth that nuclear energy is safe. We will thoroughly look into the cause of the [Fukushima] accident, and to secure safety, we'll implement fundamental measures while also decreasing the degree of dependence on nuclear power generation, to aim for a society that does not rely on nuclear power."But doctors, scientists, agricultural experts, and much of the general public in Japan feel that a much more aggressive response to the nuclear disaster is needed. Kodama believes the government needs to begin a large-scale response in order to begin decontaminating affected areas. He cited Japan's itai itai disease, when cadmium poisoning from mining resulted in the government eventually having to spend 800 billion yen to decontaminate an area of 1,500 hectares. "How much cost will be needed if the area is 1,000 times larger?"