@kazuho14 has translated the presentation of Mr Thorring into Japanese. The Sami people has a longest experience of whole body measurement of cesium, since they started the measurement project in 1960s when the atmospheric nuclear experiments were in fashion.
The main points of this presentation are the permissible level of Cs137 in reindeer meat is 6000Bq/kg (later 3000Bq/kg. 600Bq/kg for basic food products). With this regulation, there is no detectable increase of cancer in Sami population of Northern Norway, who have the longest history of whole body measurement.
Video and audio are added too.
Haavard Thorring, Research Scientist of Norwegian Radiation Protection Authority