Anna Sablina, cancer researcher and assistant professor at University of Leuven, Dec. 26, 2013: […] in case of such high radioactive dose and exposure it obviously can increase a probability of cancer development especially thyroid cancer and leukemia. […] We can always compare what people already know about the Chernobyl accident because it is a quite similar situation [to Fukushima] […] the only problem in the Chernobyl area is a really increased rate of thyroid cancer especially for kids. More than 5,000 kids there diagnosed the thyroid cancer after Chernobyl, so I would say it probably could be the same case as in Japan. And for the rest it is a bit difficult to say […] I think most of the time the only people who were directly involved in cleaning up and fixing the accident could have a really increased rate of cancer but for the rest it will be really difficult to say […]
Health consequences of chronic internal contaminations by radionuclides (pdf), IRSN (Radio-protection agency of France), 2005: The IRSN then recommends then to initiate in-depth researches in order to improve the knowledge in the area of health consequences of chronic internal contaminations […] not only focusing to cancers but also to the other types of effects and to all tissues. The main criticism to the current system is that it is mainly […] relating to the probability for a cancer or severe hereditary effects to occur [and] does not incorporate other pathologies and, in fact, researches conducted during the past years in radiotoxicology basically focused to the occurrence of cancers while neglecting other effects. It is now important to fill the gaps in this area and to describe all biological and health effects that may occur after a chronic contamination by radionuclides.
Estimate of Consequences from the Fukushima Disaster, Jiřina Vitázková and Errico Cazzoli, Nordic PSA Conference (nuclear utilities in Finland and Sweden), September 2011 (emphasis added): The results with respect to health effects show that within 80 years the number of victims of the Fukushima disaster can be expected to be AT LEAST in the range of 10,000 to 300,000 people in terms of deaths due to infectious diseases, cardiovascular diseases, genetic diseases, and cancers; and about the same number of sicknesses/syndromes needing prolonged hospitalization and health care are expected to occur. This estimates accounts only for the population already living at the time of the accident. A comparable number of excess deaths and sicknesses may be expected in the population that will be born in the period. In addition to these, more than 100,000 excess still-births and a comparable or larger number of excess children born with genetic deformations (e.g. Down syndrome) are expected […]