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The Week That Was
(Oct. 16, 2004)
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1. New on the Web: PROF. JOHN CAMERON REVIEWS THE AVAILABLE STUDIES ON HEALTH EFFECTS OF LOW-LEVEL NUCLEAR RADIATION. MODEST EXPOSURES SHOW A HORMESIS EFFECT THAT INCREASES LONGEVITY.
2. EPA TO ALLOW ACTIVIST PARTICIPATION IN RISK REFORMS:
3. PROTECTING THE ENVIRONMENT IN THE COURTROOM:
4. STUDY REVEALS COMPLIANCE SHORTFALLS BY EU MEMBERS:
5. IS AIDS CONCERN OVERBLOWN?
6. KERRY YET TO TAKE A POSITION ON GIANT WIND-POWER PROJECT
7. MORE ON FLOATING NUCLEAR PLANTS
8. MUCH ADO ABOUT CO2
9. Global Warming hysteria sweeps Europe – once again
Longevity is the most appropriate
measure of health effects of radiation.
John R. Cameron (email@example.com)
Radiology October 2003
It has been known for about a century that large doses of radiation (which are now very uncommon) increase the risk of cancer. This article presents evidence that moderate dose rate radiation significantly increases longevity without an increase in cancer. I suggest that longevity is a more appropriate measure of health effects of radiation than cancer mortality. A double blind study of humans will be necessary to determine the health effects of low-dose radiation (1).
I believe the 100-year study of British radiologists (1897-1997) is the most important study of health effects of moderate dose-rate radiation ever published. (2) It compared the death rates of British radiologists from cancer, non-cancer and all causes to those of all male non-radiologist physicians in England and Wales, hereafter referred to as the controls. The study shows that radiologists who joined a radiological society between 1897-1920 had 75% greater cancer mortality than the controls. There is no doubt that the significant cancer increase (P<0.001) was due to their high radiation doses.
The increased radiation appeared to have had an important beneficial effect on deaths from non-cancer that was not noticed at the time. The 1897-1920 radiologists' death rate from non-cancer was 14% lower (P<0.05) than the controls. This reduced non-cancer death rate cancelled out the increased death rate from cancer. The radiologists' deaths from all causes were slightly less than those of the controls. Thus, the earliest Radiologists' overall longevity as a group was not reduced despite their high radiation doses and despite their increased cancer.
The abstract of the article (2) concludes: "There was no evidence of an effect of radiation on diseases other than cancer even in the earliest radiologists, despite the fact that doses of the size received by them have been associated with more than a doubling in the death rate among the survivors of the Japanese atomic bombings." I believe the authors overlooked the fact that the significant decrease (p<0.05) in radiologists' deaths from non-cancer can only be explained as a reduction of deaths from diseases other than cancer compared with the controls.
The article concludes with the true statement: "For non-cancer causes of death there was no evidence of an increased risk in any group, even among those registering before 1921." However, it does not mention the 14% decrease (p<0.05) in deaths from non-cancer before 1921 and the 14% decrease (p<0.001) in deaths from non-cancer for the 100 years, as pointed out in my letter to the Editor. (3) A similar study of U.S. radiologists suggests that their health was better than other medical specialists after 1940. (4).
Present radiation protection limits for workers and the public are based largely on cancer deaths of A-bomb survivors. The significant increase in deaths from non-cancer of the A-bomb survivors at high doses compared to the significant reduced deaths from non-cancer of the radiologists indicates that A-bomb survivor data are not appropriate for predicting longevity for radiation workers or the public.
The longevity data from the British radiologists study indicate that the dose limit recommended for radiation workers by the International Commission for Radiological Protection (ICRP) in 1934 of 0.2 r/day (about 50 rads/year) did not need to be lowered. The very high doses to the earliest radiologists did not reduce their overall longevity as a group. British radiologists who joined a society after 1920 also had a 14% lower (p<0.001) death rate from non-cancer and an 8% lower (p<0.01) death rate from all causes than the controls.
British radiologists who joined a radiological society after 1920 never had a statistically significant excess of cancer mortality compared to the controls. This contradicts the present dogma of a linear increase of cancer with dose. The abrupt decrease in cancer deaths of the radiologists after 1920 suggests that x-ray induction of cancer may have a threshold as suggested by two earlier studies. Radium-induced bone cancer of the dial painters had a threshold of 1,000 rads to the skeleton. (5) Lung cancer induction from fluoroscopic exposures had a threshold of about 200 rads to the lungs. (6)
The British radiologists' death rate for the century from non-cancer causes was 14% lower (P<0.001) than that of the controls. Their death rate from all causes was 8% lower (P<0.01). Thus, is moderate radiation exposure harmful?
The healthiest British radiologists were those who joined a radiological society between 1955-1979. Their death rate from cancer was 29% lower (not significant); from non-cancer was 36% lower (p<0.001) and from all causes was 32% lower (p<0.001) than the controls. Their longevity would be about 3 years longer than the controls. The chance of this greater longevity being accidental is less than one in 1,000.
In my opinion, the best epidemiological study of radiation workers ever done is the DOE supported U.S. nuclear shipyard worker study (1980-1988). (7) The 28,000 nuclear shipyard workers with the largest cumulative doses had a death rate from all causes 24% lower (p<10-16) than that of 32,000 age-matched and job-matched unexposed shipyard workers.
No other study of radiation workers had the important advantage of having job-matched controls. The details of this important study have still not been published. The DOE news release about the study did not mention that the deaths from all causes of the nuclear workers were 16 standard deviations lower than the controls. (8) It does not seem realistic to me to suggest that this great health improvement can be explained by selection bias as suggested in a recent report. (9)
In summary, I believe that longevity is a better measure than cancer mortality of the health effects of radiation. The above data strongly support this belief. Is a low level of radiation therefore potentially beneficial, rather than harmful?
1. Cameron JR, “Is radiation an essential trace energy?” Physics and Society October 2001. Available at http://www.aps.org/units/fps/oct01/a5oct01.html
2. Berrington A, Darby SC, Weiss HA, Doll R, “100 years of observation on British radiologists: mortality from cancer and other causes 1897-1997.” Br J Radiol. 2001, 74, 507-519.
3. Cameron JR, “Radiation increased the longevity of British radiologists.” Br J Radiol 2002, 75:637-8.
4. Matanoski GM, Sternberg A, Elliott EA, “Does radiation exposure produce a protective effect among radiologists?” Health Physics, 1987, 52, 637-643.
5. Evans RD, “Radium in man.” Health Physics 1974, 27, 497-510.
6. Rossi HH, Zaider M, “Radiogenic lung cancer. The effects of low doses of low-LET radiation.” Rad. and Env. Biophys. 1997, 36(2): 85.
7. Matanoski G. “Health effects of low-level radiation in shipyard workers.” Final report. 1991, 471 pp. Baltimore, MD, DOE DE-AC02-79 EV10095. National Technical Information Service, Springfield, Virginia. Available at http://dewey.tis.eh.doe.gov/health/epi/docs/hb91-3.pdf
9. NCRP Report No. 136 “Evaluation of the Linear-Nonthreshold Dose-Response Model for Ionizing Radiation” page 196. National Council for Radiation Protection and Measurement, Bethesda, MD, 2001.
2. EPA to Allow Activist Participation in Risk Reforms:
Chemical Policy Alert reports that EPA has agreed to include representatives from environmental groups in a series of meetings that will discuss how the Agency may alter the ground rules for how science is used in establishing risk criteria for chemicals. The risk standards to be discussed have a significant impact on setting the criteria for state and federal regulators use in setting cleanup levels and other environmental standards. EPA is seeking to build scientific consensus around possible risk reforms, such as ways to base chemical risk estimates on multiple studies instead of a single study. Agency officials have been working with professional societies representing toxicologists, environmental chemists and risk assessors. Groups such as the Natural Resources Defense Council met with EPA officials last month to protest their exclusion from the meetings.
3. Protecting the Environment in the Courtroom:
In Maine, blueberry farmers are being sued to stop the aerial spraying of pesticides. Salmon farms are being sued for clean water violations. The U.S. Fish and Wildlife Service is being sued for not protecting the Canadian lynx and the gray wolf, and the EPA is being sued over its proposed mercury standards. Environmental groups operating in the state have initiated all these suits.
The Portland Press Herald recently looked at how lawsuits are becoming a favored tool of activists. Environmentalists say the suits are necessary to force the hand of regulators at a time when enforcement of environmental laws has become extremely politicized. However, many critics argue that runaway lawsuits are interfering with environmental protection efforts and pushing broader agendas at the expense of science. According to one expert from the Maine Department of Marine Resources, "the sheer number of environmental lawsuits is slowing down research, harming communications and collaborations between agencies, and leading to a kind of paranoia among some government workers who worry if they don't take action in certain cases - even if they consider it a waste of time and money - they will be sued."
4. Study Reveals Compliance Shortfalls by EU members:
According to the EU's fifth annual survey on the enforcement of its environmental laws, many of its member companies are falling behind in implementing and enforcing regulations. Environment Watch: Europe reports that as of December 2003, France, Greece, Ireland, Italy and Spain have the worst compliance records. Throughout the EU, the study documented 88 cases where environmental laws were not implemented on time, 118 cases where the national laws implementing EU laws were not fully compliant with the EU laws, and 95 cases where secondary regulations and requirements were inadequate or incorrect. Most of the compliance problems were in the area of environmental impact assessments, natural resource preservation, and waste and water requirements.
5. Is AIDS Concern Overblown?
"The proportion of Americans who consider HIV/AIDS to be the "most urgent health problem facing this nation today" has http://www.kff.org/kaiserpolls/loader.cfm?url=/commonspot/security/getfile.cfm&PageID=30227decreased from 38% in 1997 to 17% in 2002." So laments former Centers for Disease Control and Prevention http://www.cdc.gov/ncidod/index.htm (CDC) HIV/AIDS director http://aids.about.com/cs/profiles/p/jaffe.htmDr. Harold Jaffe in the August 27 issue of Science. While lauding the U.S. overseas effort, he insists "We must ask ourselves why we, collectively, don't care more about the domestic epidemic."
To a great extent Dr. Jaffe, now with the Department of Public Health at Oxford University in England, literally illustrates why AIDS should be eliciting less concern and funding. In the article's sole graph, he shows new diagnoses peaked a full decade ago and are now barely half the rate as then. Deaths peaked slightly later and have declined about 75 percent.
About 16,000 Americans died from AIDS in 2002, approximately half the number that die annually from flu. Meanwhile, over half a million die from cancer yearly, with the deaths from incurable pancreatic cancer alone about twice that as for AIDS. According to the CDC, 435,000 Americans die each year from tobacco-related disease and another 400,000 from poor diet and lack of exercise. (Though arguably those last two figures are exaggerated.)
What Dr. Jaffe views with alarm actually reflects a decrease in national hysteria. It's obscene that almost a fifth of Americans still consider AIDS our prime health problem when heart disease, which kills 700,000 Americans annually, gets a worry rating of merely eight percent.
Although AIDS cases and deaths are declining and the disease remains completely preventable, it nonetheless gets almost $180,000 in research funds per death from the National Institutes of Health. Compare that to its closest rivals: Parkinson's disease, prostate cancer, and diabetes. All of these receive about $14,000 per death. Alzheimer's gets about $11,000. Yet Dr. Jaffe bemoans that the CDC HIV/AIDS budget has not kept up with inflation over the last few years. So a minimum 13-to-1 spending ratio over any other disease somehow isn't enough.
Further, it's possible we've already reached the point where HIV infection has become a controllable disease, especially for those with recent diagnoses. That's hardly the case with Parkinson's or Alzheimer's.
And that only includes medical research funding. Each year under the "Ryan White CARE" legislation, which Congress unanimously re-authorized in 2000, approximately $2 billion in taxpayer funds are doled out to AIDS patients for medicine, housing, meals, cash payments, dental care, and a vast panoply of goods and services. Victims of no other disease have any such entitlement.
6. Kerry yet to take a position on giant wind-power project
By Hal Bernton, September 30, 2004, Seattle Times
NANTUCKET, Mass. From his family's island vacation home here that fronts the sea, John Kerry relishes the chance to hook into his windsurfing gear and sail as far as 35 miles across Nantucket Sound to Cape Cod. On the campaign trail, when Kerry talks about U.S. energy independence, he cites the wind as part of a massive, new effort to develop U.S. renewable-energy sources.
"I believe we can - and should - produce 20 percent of our electricity from renewable sources by 2020," Kerry said in a June 2003 speech on energy delivered in Cedar Rapids, Iowa. "Twenty by 2020, now that's a clear vision for America."
But Kerry's vision is not yet clear on whether he supports the largest wind-power project ever proposed in the United States. The project would erect 130 turbine-topped towers in the middle of blustery Nantucket Sound, a site touted by the developer as the best wind-power site in New England.
So far, Kerry has balked at endorsing the project, saying he is waiting to review an Army Corps of Engineers draft report expected to be released later this fall.
Meanwhile, in Helmshagen, North Germany, a Danish-built wind turbine collapsed. No deaths or injuries reported but concerns about safety (Ostseezeitung/Greifswalder Zeitung 3.9.04). The 80-turbine wind park Horns Rev (Vestas) off the Danish coast must be completely rebuilt because of difficulties from salt air and wave action (FAZ 20.9.04)
7. More on Floating Nuclear Plants
Russia floating nuclear plant -- on your mark, ready, set, ... set, ... set ...
Russian company Rosenergoatom may get financing from China to construct a floating nuclear plant to be built at Severodvinsk shipyard. China could finance from half to all of the US$145 million construction. The company is bullish on the prospects for floating plants, because they could claim a large share of the fast-growing global desalination market. Their mobility would allow them to provide fresh water and electricity to coastal areas in Asia and Africa. Associated Press cites a company insider, who asked to remain anonymous, as saying that Chinese officials have offered a loan for the project. China may build the barges used for the plants. If the first plant turns out to be safely operated, China may be interested in joining in more such deals. There have been many "green lights" announced for Russia's floating nuclear plant project recently, but construction has not yet begun.
[Ref: Associated Press, "Russia, China may cooperate in building floating nuclear power plants", The Russia Journal, July 23, 2003 11:59 GMT]
Indonesia to try FNP?
Russia's Atomic Energy Ministry offered Indonesia an experimental 48-megawatt floating nuclear plant. The plant would be capable of moving to different parts of the archipelago when more electricity is temporarily needed. Such a plant, complete by the year 2015, is expected to cost some $200-300-million to build. Construction would be done in Indonesia, under supervision of Russian specialists. Russian and Indonesian representatives have reportedly held provisional talks and intergovernmental documents are being drafted for signing. [Source:Ria OREANDA Economic News (Russia), "Russia's Atomic Energy Ministry Sells Indonesia Experimental Floating Nuclear Plant", April 24, 2003]
Russia offers India floating nuclear power plants
In March this issue was discussed in India by Vladimir Asmolov, Russian Nuclear Agency representative, ITAR-TASS reported. 2004-04-10 Russia has offered to supply floating nuclear plants to India as a way of bypassing international restrictions on nuclear technology transfers.
The NSG restrictions will not be broken as Russia plans to build a floating nuclear power plant and trawl it to India's shores. The plant will be operated by Russian personnel and India will only buy electricity. One 70-MW floating unit can generate enough electricity and thermal energy to support a town of 50,000 people or provide enough fresh water for one million people. Mounted on a barge it can be towed to any point along India's coastline and operate for four years without reloading nuclear fuel. However, the cost of electricity produced by the $150-million floating plant will be twice as high as for onland reactors. Russia is planning to construct a full-fledged floating nuclear plant by the year 2008 to supply power to the country's remote northern areas.
Russia is now constructing two nuclear reactors at Koodankulam in Tamil Nadu under an accord signed before the NSG clamped down its restrictions in 1992. Being a member of the NSG, Russia cannot have any new nuclear deals with India, but floating reactors are different.
8. Much ado about CO2
In recent decades CO2 increased on average by 1.5 parts per million (ppm) a year because of the amount of oil, coal and gas burnt, but has now jumped to more than 2 ppm in 2002 and 2003.
Since there was no sign of a dramatic increase in the amount of fossil fuels being burnt in 2002 and 2003, the rise could be a weakening of the Earth's carbon sinks or a temporary increase of natural emissions.
Recordings from a volcano-top observatory, NOAA's Mauna Loa Observatory on Hawaii, showed carbon dioxide levels had risen to an average of about 376 parts per million (ppm) for 2003. The level of the major greenhouse gas, carbon dioxide, in the Earth's atmosphere has hit a record high, US government scientists have reported.
Of course, you dummies. With continued annual increases, every year is bound to set a new record.
9. Global Warming hysteria sweeps Europe – once again
In Spiegel Online/ Science
"MYSTERIOUS CO2-VALUES: Researchers see Indications for a Heat Spiral”
Even scientists who can be relied on to support the global warming scare are embarrassed. Prof. Mojib Latif (at Kiel University): “Two years is not enough to establish a trend.”
Sir David King, Tony Blair's intrepid chief scientific adviser, will draw attention to the unprecedented rise in a speech on climate change at a Greenpeace event tomorrow night. [The Daily Telegraph, 11 October 2004]
Yes, that's what all the excitement is about. Measured CO2 increases in 2002 and 2003 exceeded the average yearly increase. Not by much, mind you; the 1998 increase was much higher. And what about all those years when the increase was below average? Does that also portend a crisis? Perhaps a little ice age?
Check the weather in Argentina
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