http://www.who.int/mediacentre/news/releases/2005/pr38/en/ http://www.chernobyltissuebank.com
I went to a talk by Prof Geraldine Thomas, of the Chernobyl Tissue Bank and Imperial College London, sharing her insights and research into radiation and its effects on the body. The key takeaway from the talk is to take into account the type of release, what radionuclides were exposed to the public and their half-life, and then what the passage of that particular element is through the body to determine what damage can be done.
A notable example is of Iodine-131 causing of thyroid lesions and cancers in the direct aftermath of an event because of its short half life of alpha decay directly into tissue that bioaccumulates Iodine, keeping the alpha decay focussed on a very specific tissue. Other heavier elements tend to (I am not a biologist or nuclear scientist, paraphrasing from a talk a couple years ago) can leave the body without being bioaccumulated, having only released 'tolerable' amounts of alpha decay into a broad area of tissue.
It would be interesting to know if those "unusual cancers" were in some part a result of radionuclide exposure from Chernobyl or the result of other factors. But I — a nobody with a causal subject matter interest — would be hesitant to suggest that there was causation in absence of a hypothesis based on biology tied to the known Chernobyl emissions. Either way, we can find out more about radiations effect on biology if a study takes place — or if there is already one out there?
"Otherwise, the team of international experts found no evidence for any increases in the incidence of leukemia and cancer among affected residents."
Except that according to official numbers Belarus, which after the explosion was right down the wind from it, has overall 1.5 times higher cancer rates than Russia or Ukraine have (Russia and Ukraine have the same rate) with some cancer rates being 2x-3x in the Gomel and Mogilev region - the regions right next to the Chernobyl. Such cancer picture is a new development compare to pre-Chernobyl years.
>It would be interesting to know if those "unusual cancers" were in some part a result of radionuclide exposure from Chernobyl or the result of other factors.
Anybody is welcome to suggest such "other factors" which would explain the overall rate increase after Chernobyl with the distribution of rate so that it clearly increases in the regions closer to Chernobyl, while these factors must also be Belarus specific compare to Russia and Ukraine.
The radionuclides expelled from Chernobyl are known and traceable, not being found in nature they can be detected easily. Knowing their decay chain over time and, later, the bioaccumulation of those isotopes (based on how people will come in to contact with them) you can start to figure out how tissues that bioaccumulate or come into contact with an alpha source could react.
What I am saying is, it's important to understand that its not just about 'radiation' may equal 'cancers'. We know how to understand this deeper than that, on how to measure and calculate health effects based on the specific isotopes and their related exposures on tissues, primarily internally — because alpha decay has the highest energy but is easily absorbed by paper or the outer epidermis, to do damage it has to be in close proximity to sensitive tissues. So its important to stick to those more calculable and verifiable hypothesis rather than broad 'radiation' and 'cancer' labels.
I specifically mentioned Russia and Ukraine because such factors like drinking, smoking, food, genetics, lifestyle/habbits are very similar across all 3 countries and thus can't explain those post-Chernobyl appeared high cancer rates in Belarus.
A UN IAEA team visited the site on May 8th, unthinkable in pre-Gorbachev times. Gorbachev was elected Secretary General only a year before.
The agreement by the USSR to permit IAEA inspections was signed in February 1985, a month before Mr Gorbachev was appointed.
https://www.upi.com/Archives/1985/02/22/Soviets-to-allow-ins...
http://www.nytimes.com/1985/08/06/world/soviet-said-to-appro...
Inviting the Director General of the IAEA to the accident site was independent of that.
But reports from neighboring countries pretty quickly put that to rest, and then the narrative switched to the heroics of the emergency workers (who were indeed heroic and, sadly, literally self-sacrificing.
The plume traveled over northern Western Europe, but West Germany, at least, didn't take any immediate action. 15-20 years later there appeared to be a slew of unusual cancers (e.g. my mother in law's tear duct; my friend's mother salivary gland...unusual ones in accretive tissue. But I don't know if there's been any systematic survey to see if there was an assignable increase in the death rate, or if I am just divining a signal from what's actually small-n noise.