Navigation Links
Moderate Radiation Tied to Heart Disease, Stroke

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:
(Date:10/13/2015)... PA (PRWEB) , ... October 13, 2015 , ... "My ... digging his fists into his infected cheeks," said an inventor from Platteville, Colo. "I ... their skin problems." , He developed the UNTOUCHABLE to prevent a child from rubbing ...
(Date:10/13/2015)... Nashville, Tennessee (PRWEB) , ... October 13, 2015 ... ... owned leader of anesthesia and pain management services, today announced its partnership with ... the partnership integrates data from disparate systems and organizes the data into an ...
(Date:10/13/2015)... ... 13, 2015 , ... According to an article published October 5th ... who successfully lose weight with a bariatric procedure are much less likely to develop ... notes that anywhere from 40 to 50 percent of all endometrial cancer cases are ...
(Date:10/13/2015)... CA (PRWEB) , ... October 13, 2015 , ... ... and workflow solutions, announced today their sponsorship of the Microsoft Dynamics AXUG, GPUG ... Nevada. AXUG Summit, GPUG Summit and NAVUG Summit are independent user conferences designed ...
(Date:10/13/2015)... TEXAS (PRWEB) , ... October 13, 2015 , ... ... and solution provider of IBM software products, introduced a new company, RightSensorâ„¢ LLC, ... systems and data communications capability. RightSensorâ„¢ provides a fully-managed approach for customers ...
Breaking Medicine News(10 mins):
(Date:10/13/2015)... Oct. 13, 2015  Kay Elledge, M.D., an ... American College of Obstetrics and Gynecology (FACOG) for ... establishing the Genuine Self Medical Laser Center where ... In recognition of Breast Cancer Awareness Month ... for MonaLisa Touch treatments initiated in ...
(Date:10/13/2015)... , Oct. 13, 2015  ContraVir Pharmaceuticals, ... "Company"), a biopharmaceutical company focused on the development ... the closing of its previously announced underwritten public ... and warrants to purchase up to 3,000,000 shares ... combined price to the public of $3.00. The ...
(Date:10/13/2015)... 13, 2015  Data Science Automation (DSA), a system integration ... new branch office in the United Kingdom ... Europe . The decision to open the ... local support of customers in the medical device industry throughout ... Branch Manager. "We have had tremendous success over the last ...
Breaking Medicine Technology: