Featured Research

from universities, journals, and other organizations

Exposure To Radiation After Chornobyl Increases Risk Of Thyroid Cancer In Children And Adolescents

Date:
July 5, 2006
Source:
Columbia University's Mailman School of Public Health
Summary:
In a study of thyroid cancer after the Chornobyl accident in 1986, researchers at Columbia University's Mailman School of Public Health report that exposure to radioactive iodine ingested through the food chain increases the risk of thyroid cancer in children and adolescents.

In a study of thyroid cancer after the Chornobyl accident in 1986, researchers at Columbia University's Mailman School of Public Health report that exposure to radioactive iodine ingested through the food chain increases the risk of thyroid cancer in children and adolescents. The study is published in the July 5 issue of the Journal of the National Cancer Institute.

The 1986 accident at the Chornobyl nuclear power plant exposed large numbers of people in Belarus, Ukraine, and the Russian Federation to highly radioactive material. Numerous studies have shown that exposure to certain types of radiation increases the risk of thyroid cancer in children and adolescents. However, up until now, few studies examined the effects of exposure to radioactive iodines, which can get into the food chain, and only three studies measured cancer risk from the Chornobyl-related exposures.

The team of researchers at the M ailman School of Public Health, with colleagues, screened more than 13,000 people for thyroid cancer who were under 18 at the time of the Chornobyl accident and lived in highly contaminated areas of Ukraine. The researchers estimated each participant's individual radiation dose using thyroid radioactivity measurements made shortly after the accident and interview data obtained during screening.

The researchers found 45 cases of thyroid cancer in the screened group in comparison with the 11.2 cases expected without the accident. Subjects had a tendency toward lower risk of thyroid cancer with increasing age at the time of the exposure. The authors suggest that exposure to radioactive fallout from the Chornobyl accident increased thyroid cancer risk in those exposed as children and adolescents.

“In young children and adolescents, thyroid gland tissue requires large amounts of iodine coming primarily from food,” said Geoffrey R. Howe, PhD, professor of epidemiology at the Mailman School and principal investigator. “If radioactive iodine gets into the food chain, as was the case in Chornobyl, children and adolescents accumulate large amounts of radioactive iodines in their glands. This exposes the thyroid tissues to the radiation which in turn, increases the chance of getting thyroid cancer and other diseases of the thyroid gland later in life.”

The researchers estimate that 75% of the thyroid cancer cases would have been avoided in the absence of radiation. “This estimate demonstrates a substantial contribution of radioactive iodines to the excess of thyroid cancer that followed the Chornobyl accident,” observed Dr. Howe.


Story Source:

The above story is based on materials provided by Columbia University's Mailman School of Public Health. Note: Materials may be edited for content and length.


Cite This Page:

Columbia University's Mailman School of Public Health. "Exposure To Radiation After Chornobyl Increases Risk Of Thyroid Cancer In Children And Adolescents." ScienceDaily. ScienceDaily, 5 July 2006. <www.sciencedaily.com/releases/2006/07/060705182200.htm>.
Columbia University's Mailman School of Public Health. (2006, July 5). Exposure To Radiation After Chornobyl Increases Risk Of Thyroid Cancer In Children And Adolescents. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2006/07/060705182200.htm
Columbia University's Mailman School of Public Health. "Exposure To Radiation After Chornobyl Increases Risk Of Thyroid Cancer In Children And Adolescents." ScienceDaily. www.sciencedaily.com/releases/2006/07/060705182200.htm (accessed April 19, 2014).

Share This



More Health & Medicine News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

'Holy Grail' Of Weight Loss? New Find Could Be It

'Holy Grail' Of Weight Loss? New Find Could Be It

Newsy (Apr. 18, 2014) In a potential breakthrough for future obesity treatments, scientists have used MRI scans to pinpoint brown fat in a living adult for the first time. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. Video provided by Newsy
Powered by NewsLook.com
Scientists Create Stem Cells From Adult Skin Cells

Scientists Create Stem Cells From Adult Skin Cells

Newsy (Apr. 17, 2014) The breakthrough could mean a cure for some serious diseases and even the possibility of human cloning, but it's all still a way off. Video provided by Newsy
Powered by NewsLook.com
Obama: 8 Million Healthcare Signups

Obama: 8 Million Healthcare Signups

AP (Apr. 17, 2014) President Barack Obama gave a briefing Thursday announcing 8 million people have signed up under the Affordable Care Act. He blasted continued Republican efforts to repeal the law. (April 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins