Children's cancer linked to Fukushima radiation
Source: Associated Press
A new study says children living near the Fukushima nuclear meltdowns have been diagnosed with thyroid cancer at a rate 20 to 50 times that of children elsewhere, a difference the authors contend undermines the government's position that more cases have been discovered in the area only because of stringent monitoring.
Most of the 370,000 children in Fukushima prefecture (state) have been given ultrasound checkups since the March 2011 meltdowns at the tsunami-ravaged Fukushima Dai-ichi nuclear plant. The most recent statistics, released in August, show that thyroid cancer is suspected or confirmed in 137 of those children, a number that rose by 25 from a year earlier. Elsewhere, the disease occurs in only about one or two of every million children per year by some estimates.
"This is more than expected and emerging faster than expected," lead author Toshihide Tsuda told The Associated Press during a visit to Tokyo. "This is 20 times to 50 times what would be normally expected."
The study was released online this week and is being published in the November issue of Epidemiology, produced by the Herndon, Virginia-based International Society for Environmental Epidemiology. The data comes from tests overseen by Fukushima Medical University.
<snip>
Read more: https://www.dailystar.com.lb/Life/Health/2015/Oct-08/318143-childrens-cancer-linked-to-fukushima-radiation.ashx
Octafish
(55,745 posts)A new analysis of data from Fukushima suggests children exposed to the March 2011 nuclear accident may be developing thyroid cancer at an elevated rate.
But independent experts say that the study, published in the journal Epidemiology, has numerous shortcomings and does not prove a link between the accident and cancer.
SNIP...
Japanese officials believe the screening process itself may be behind the numbers. Increased vigilance might be turning up thyroid abnormalities that otherwise would have gone undetected.
SNIP...
Other researchers are skeptical of the new result. Geraldine Thomas, a professor at Imperial College who has studied thyroid cancer from Chernobyl, says the analysis incorrectly compares the screening in Fukushima to clinical cases of Thyroid cancer in which patients are already sick. The comparison falsely suggests thyroid cancer in Fukushima is elevated by as much as 50 times compared with the general population. "This is not a very good paper to be basing opinions on," she says.
SNIP...
David Brenner, director of the Center for Radiological Research at Columbia University, adds that the study makes no effort to trace the exposure of patients. "It's simply relating geographic regions to cancer risks and not looking at individual radiation doses," he says, adding that without that information, it's virtually impossible to connect the screenings to the accident.
"It really doesn't tell us the whole story," he says.
valerief
(53,235 posts)bananas
(27,509 posts)closeupready
(29,503 posts)modern civilization attempts to dismiss the findings of a study NOT on the basis of HOW the study was conducted or even the findings of the study itself, but rather, on the basis that (to paraphrase) "there are more unknowns to study."
The silliness here is almost painful, particularly because there are thousands of children at risk.
bananas
(27,509 posts)Fukushima radiation hits home as thyroid cancer rises among children
Thyroid cancer rates were about 20 to 50 times the national average, according to the analysis.
By Elizabeth Shim | Oct. 8, 2015 at 2:19 PM Follow @upi
TOKYO, Oct. 8 (UPI) -- Fukushima radiation has been linked to a surge in thyroid cancer among children near the disaster area, and radiation woes have reach South Korea, where findings revealed imported tobacco from Japan contained higher than normal levels of radioactive cesium.
<snip>
Japan's nuclear radiation woes have reached neighboring South Korea, and government officials in Seoul have begun to raise concerns about radioactive cesium in imported tobacco. South Korean outlet Newsis reported Thursday.
After a parliamentary audit, South Korean opposition party lawmaker In Jae-keun said 20,271 tons of imported Japanese tobacco imported from seven prefectures, including Fukushima, contained the radioactive isotope. In 421 tests of native and burley leaf tobacco, 68 percent tested positive for cesium.
The revelation is a public health concern, according to Newsis, because South Korea does not check Japanese tobacco for radiation and has only conducted tar and nicotine tests on the products.
The Newsis website is http://www.newsis.com/ but it's not an English-language website.
davidpdx
(22,000 posts)I know there is a lot of concerns here in Korea about imported items from that area. Many people won't buy Asahi beer anymore.
bananas
(27,509 posts)View Larger
Toshihide Tsuda, a professor at Okayama University, listens to a reporter's questions during a press conference at Foreign Correspondents' Club of Japan in Tokyo, Thursday, Oct. 8, 2015. ... (AP Photo/Koji Sasahara)
lostnfound
(16,170 posts)Any causality should be pretty obvious then.
bananas
(27,509 posts)doi: 10.1097/EDE.0000000000000385
Original Article: PDF Only
Thyroid Cancer Detection by Ultrasound Among Residents Ages 18 Years and Younger in Fukushima, Japan: 2011 to 2014.
Tsuda, Toshihide; Tokinobu, Akiko; Yamamoto, Eiji; Suzuki, Etsuji
Open Access
Published Ahead-of-Print
Abstract
Background: After the Great East Japan Earthquake and Tsunami in March 2011, radioactive elements were released from the Fukushima Daiichi Nuclear Power Plant. Based on prior knowledge, concern emerged about whether an increased incidence of thyroid cancer among exposed residents would occur as a result.
Methods: After the release, Fukushima Prefecture performed ultrasound thyroid screening on all residents ages <=18 years. The first round of screening included 298,577 examinees, and a second round began in April 2014. We analyzed the prefecture results from the first and second round up to December 31, 2014, in comparison with the Japanese annual incidence and the incidence within a reference area in Fukushima Prefecture.
Results: The highest incidence rate ratio, using a latency period of 4 years, was observed in the central middle district of the prefecture compared with the Japanese annual incidence (incidence rate ratio = 50; 95% confidence interval [CI] = 25, 90). The prevalence of thyroid cancer was 605 per million examinees (95% CI = 302, 1,082) and the prevalence odds ratio compared with the reference district in Fukushima Prefecture was 2.6 (95% CI = 0.99, 7.0). In the second screening round, even under the assumption that the rest of examinees were disease free, an incidence rate ratio of 12 has already been observed (95% CI = 5.1, 23).
Conclusions: An excess of thyroid cancer has been detected by ultrasound among children and adolescents in Fukushima Prefecture within 4 years of the release, and is unlikely to be explained by a screening surge.
This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially.
Copyright (C) 2015 Wolters Kluwer Health, Inc. All rights reserved.
davidpdx
(22,000 posts)Last edited Fri Oct 9, 2015, 09:23 AM - Edit history (1)
I'd try reading it, but I have a hard time with physical sciences. I'm more a social science person.
Open access journals are the way to go. People should be able to read journals and not pay exorbitant prices. I just had my first journal article published (it came out yesterday) and it was in an open access journal.
bananas
(27,509 posts)Art_from_Ark
(27,247 posts)Interesting. It seems to correlate with high radiation levels displayed on this map that was created with data obtained 9 months after the explosions. Note how the highest levels (shown in red) extend northwestward from the reactors, and reach outside of the 20km/12mile exclusion zone. That radiation was carried by prevailing winds from the Pacific Ocean (blowing SE to NW) for a bit inland, until the winds shifted to NE-SW, resulting in several hotspots, including some major hotspots in Fukushima City, in the central area of the prefecture. The orange areas show measured levels of between 4 and 8 microsieverts per hour (for comparison, normal levels there are usually around 0.04 microsievert/hour).
Also of interest is that some cities far to the south of the reactors, such as Moriya and Kashiwa, were considered to be "hotspots" even though their respective radiation levels (about 10X above normal) were much lower than those in Fukushima City. Moriya and Kashiwa were also among those cities that issued orders to remove dirt from playgrounds, schoolyards, and other areas where children congregate if radiation levels 30cm/1 foot above the ground exceeded 0.5 microsievert/hour.
Joe Chi Minh
(15,229 posts)we could soon have banana-powered nuclear power-stations, what with even bananas giving off a little radiation, as they tell us. (Nothing personal eponymous poster!)