[ RadSafe ] Radiation Exposure Tied To Lymphoma Risk In Men

HOWARD.LONG at comcast.net HOWARD.LONG at comcast.net
Thu Apr 16 11:51:16 CDT 2009


Note that the Bomb radiation association with lymphoma appeared after 20 rad, 

(40X that with beneficial effect found in NSWstudy), which also had slow, 


Try gulping 40 scoops of ice cream at one time! (Bomb vs nuclear worker - one "scoop" a day) 

I continue to sit on thoriated welding rods which give me radiation dose 

more like Denver's (lower cancer rate). 

If you do 20 studies, one of them will show "statistically significant" association, by chance alone! 

Guess which one would be reported. 

Howard Long 

----- Original Message ----- 
From: "Robert Yoss" <ryoss at mcw.edu> 
To: radsafe at radlab.nl 
Sent: Thursday, April 16, 2009 5:27:41 AM GMT -08:00 US/Canada Pacific 
Subject: [ RadSafe ] Radiation Exposure Tied To Lymphoma Risk In Men 

NEW YORK (Reuters Health) - Although there is a considerable delay 
between exposure to ionizing radiation and death from lymphoma, these 
events do appear to be connected, researchers report in the April 15th 
issue of the American Journal of Epidemiology. 

"Radiation-exposed workers who develop lymphoma," lead investigator Dr. 
David B. Richardson told Reuters Health, "have found it difficult to 
obtain compensation because of the contention that ionizing radiation 
does not cause lymphoma." 

To shed more light on the possible risk, Dr. Richardson of the 
University of North Carolina, Chapel Hill, and colleagues studied data 
for 15,264 male US nuclear workers who were hired between 1950 and 1986, 
and 20,940 male Japanese atomic bomb survivors. 

Through 2000, there were 90 malignant lymphoma deaths including 6 from 
Hodgkin's disease in the Japanese group. In the US group, there were 56 
lymphoma deaths, of which 5 were due to Hodgkin's disease. 

Using a 5-year lag assumption, the team found the excess relative risk 
(ERR) per sievert was 0.79 in the Japanese cohort and 6.99 in the US 
workers. Use of a 10-year lag assumption prompted a slight increase in 
the magnitude of the association. 

At 35 or more years after exposure, in the Japanese cohort, there was a 
positive association between dose and lymphoma mortality (ERR per 
sievert, 1.93). Moreover, in the US workers, the dose-response 
association appeared 35 years or more since the initial exposure event. 
No relationship between Hodgkin's disease and lymphoma mortality was 

Thus, concluded Dr. Richardson, "this study provides evidence of 
increasing lymphoma risk with increasing radiation dose among male US 
nuclear workers and among male Japanese atomic bomb survivors." 

Am J Epidemiol 2009;169:969-976. 


Bob Yoss 
ryoss at mcw.edu 

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