Navigation Links
Moderate Radiation Tied to Heart Disease, Stroke
Date:1/15/2010

Study does not clarify whether exposure from scans raises risk,,

FRIDAY, Jan. 15 (HealthDay News) -- New research based on the experiences of atomic-bomb survivors has found a link between exposure to moderate levels of radiation and higher levels of heart disease and stroke.

It's not clear, however, if the radiation directly causes the diseases, nor is it clear if there's a link between lower doses and the health problems.

High doses of radiation to the heart, head or neck have been shown to boost the risk of heart disease or stroke later in life. But the effect of lower doses -- 1 gray (Gy) or less -- needs clarification, experts say, at least in part because of the increasing use of medical scans that rely on radiation.

Average radiation exposure from medical procedures is considerably lower and usually measured in milligray (mGy). An abdominal X-ray exposes the recipient to 1.4 mGy (0.0014 Gy), and an abdominal CT scan puts out a radiation dose of 8.0 mGy (0.008 Gy), according to background information in a news release from BMJ. The journal published a report on the new research online Jan. 15.

For the study, researchers from the Radiation Effects Research Foundation in Japan examined the medical records of 86,611 Hiroshima and Nagasaki atomic-bomb survivors who were followed from 1950 to 2003. All had been exposed to radiation doses from 0 to 4 Gy, with 86 percent exposed to less than 0.2 Gy.

After taking into account the possible effects of such factors as smoking, education and obesity, the researchers determined that the rates of stroke and heart disease went up among those who were exposed to doses higher than 0.5 Gy, which they labeled moderate. They did not clarify how lower doses affected risk.

In an accompanying commentary, Mark Little, of Imperial College London, agreed with the researchers that future study should explore whether low doses of radiation affect the body's biological mechanisms in similar ways.

More information

The U.S. Environmental Protection Agency has more on the health effects of radiation.



-- Randy Dotinga



SOURCE: BMJ, news release, Jan. 15, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. New Study Demonstrates Ramelteon Does Not Exacerbate Respiratory Depressant Effects in Patients With Moderate-to-Severe COPD
2. Moderate Exercise Cuts Risk of Metabolic Syndrome
3. Gene variant linked to moderated symptoms of beta-thalassemia
4. Moderate Aerobic Fitness Levels May Cut Stroke Risk
5. A Drug With Efficacy Superior to That of Memantine Would Earn up to a 50% Patient Share in the Moderate-to-Severe Alzheimers Disease Drug Market
6. Moderate alcohol consumption in middle age can lower cardiac risk
7. Ad in USA TODAY Touts Benefits of Moderate UV Exposure
8. FDA Approves Taclonex Scalp(R) - Once Daily Therapy for Treatment of Moderate to Severe Scalp Psoriasis
9. Drug Works Well for Moderate-to-Severe Psoriasis
10. Moderate Aerobics May Ease Insomnia Symptoms
11. SEAL Indiana Reports More Than Half of Indianapolis Area School Kids Treated by Program Have Moderate or Severe Dental Decay
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/12/2017)... ... October 12, 2017 , ... Leading pediatric oncology experts at ... for the 49th Congress of the International Society of Paediatric Oncology (SIOP) ... Center for Cancer and Blood Disorders at Children’s National, and Stephen P. ...
(Date:10/12/2017)... ... October 12, 2017 , ... Women-owned and ... 2017 Best and Brightest in Wellness® by Best and Brightest. OnSite Wellness will ... Friday, Oct. 20 from 7:30 a.m. to 2 p.m. at the Henry Autograph ...
(Date:10/12/2017)... BALTIMORE (PRWEB) , ... October 12, 2017 , ... ... average of $3,296 in property taxes a year. In some states—like New York, ... higher. , By contrast, many overseas retirement havens have extremely low property-tax rates, ...
(Date:10/12/2017)... ... October 12, 2017 , ... Farm Forward ... Berkeley, and other leading institutions in announcing the launch of the Leadership ... the way animals are raised for food. , Founding members of the Leadership ...
(Date:10/12/2017)... Texas (PRWEB) , ... October 12, 2017 , ... ... and biologics manufacturer, has expanded its executive staff with the addition of industry ... In this role, Slott will develop the national distribution and sales network, direct ...
Breaking Medicine News(10 mins):
(Date:9/27/2017)... MIAMI , Sept. 27, 2017  Commended for their ... recent notable awards. Ranked as number one in the South ... ninth time in Inc. 5000 yearly list, the national specialty ... CEO, Armando Bardisa will soon be honored by ... Set to receive his award ...
(Date:9/22/2017)... 22, 2017  As the latest Obamacare repeal effort ... Cassidy (R-LA) and Lindsey Graham (R-SC) ... medical device industry is in an odd place.  The ... 2.3% excise tax on medical device sales passed along ... covered patients, increased visits and hospital customers with the ...
(Date:9/18/2017)... 18, 2017 EpiVax, Inc. ("EpiVax") ... and immune engineering, today announced a new ... (H7N9) vaccine. ... influenza and presents a challenge for traditional ... to be effective. Using state-of-the-art bioinformatics and molecular ...
Breaking Medicine Technology: