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 October 1, 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 October 1, 2014).

Share This



More Health & Medicine News

Wednesday, October 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pregnancy Spacing Could Have Big Impact On Autism Risks

Pregnancy Spacing Could Have Big Impact On Autism Risks

Newsy (Oct. 1, 2014) A new study says children born less than one year and more than five years after a sibling can have an increased risk for autism. Video provided by Newsy
Powered by NewsLook.com
Robotic Hair Restoration

Robotic Hair Restoration

Ivanhoe (Oct. 1, 2014) A new robotic procedure is changing the way we transplant hair. The ARTAS robot leaves no linear scarring and provides more natural results. Video provided by Ivanhoe
Powered by NewsLook.com
Insertable Cardiac Monitor

Insertable Cardiac Monitor

Ivanhoe (Oct. 1, 2014) A heart monitor the size of a paperclip that can save your life. The “Reveal Linq” allows a doctor to monitor patients with A-Fib on a continuous basis for up to 3 years! Video provided by Ivanhoe
Powered by NewsLook.com
Attacking Superbugs

Attacking Superbugs

Ivanhoe (Oct. 1, 2014) Two weapons hospitals can use to attack superbugs. Scientists in Ireland created a new gel resistant to superbugs, and a robot that can disinfect a room in minutes. Video provided by Ivanhoe
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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