Navigation Links
Modern Shift Work Patterns May Be Less Harmful to Health
Date:9/29/2011

THURSDAY, Sept. 29 (HealthDay News) -- Working rotating shifts is not as potentially unhealthy as it used to be, according to new Canadian research that suggests modern shift patterns may not carry the same risks for cancer as older, more extreme shift schedules.

"Recent research has suggested shift work could increase the risk of cancer, although the biological mechanism responsible for this observation is still unknown," the study's lead author, Anne Grundy, a doctoral student in the Queen's University department of community health and epidemiology in Ontario, said in a university news release. "Our study indicates that the now common rotating shift pattern of day-day-night-night may not disrupt circadian rhythm or melatonin production significantly."

Melatonin, a hormone shown to have anti-carcinogenic qualities, is tied to the light-dark cycle, and melatonin levels typically peak between midnight and 4 a.m. As a result, shift workers who are exposed to light throughout the night may have an increased risk of diseases such as cancer. The study found, however, that recent changes in how shifts are scheduled may help reduce the health risks for these workers.

The researchers studied 123 Kingston General Hospital shift workers who wore light-intensity meters to determine their peak melatonin levels and the overall change in melatonin levels during winter day and night shifts, as well as summer day and night shifts.

In the hospital where the study took place, the wards are dimly lit at night, resulting in little difference in peak melatonin levels between day- and night-shift workers. In cases where the night workers were exposed to more light, however, the workers' overall change in melatonin levels decreased slightly, which the study authors called a statistically significant finding.

"We've already seen a shift away from the older patterns of two weeks of days, two weeks of nights and a short time off, to more humane patterns of day-day-night-night then five days off, so it's possible that an intervention to combat the health risks of shift work has already occurred," Grundy said in the news release.

"However, the overall change in melatonin levels that we found may still be a concern," she added. "We look forward to seeing other studies that either confirm our findings or that examine the impact of specific risk factors like extreme shift patterns and higher intensities of light at night."

The findings were published in the Sept. 27 online edition of Cancer Epidemiology, Biomarkers & Prevention.

More information

The U.S. Centers for Disease Control and Prevention has more about shift work and health.

-- Mary Elizabeth Dallas

SOURCE: Queen's University, news release, Sept. 27, 2011


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

Related medicine news :

1. Modern shift work pattern potentially less harmful to health
2. Modern targeted drug plus old malaria pill serve a 1-2 punch in advanced cancer patients
3. Study shows that modern surgery for scoliosis has good long-term outcomes
4. Learning from old bones to treat modern back pain
5. Famed neurosurgeons century-old notes reveal modern style admission of medical error
6. Sows ears and silk purses: Packing more flavor into modern pork
7. The brains journey from early Internet to modern-day fiber optics -- all in 1 lifetime
8. Action of modern drug demonstrates how 2 ancient human systems interact
9. The New 2010 Modernized Medicare Supplement Plans: Positive Changes in the Midst of Health Care Reform
10. Denver Plastic Surgeon Deploys Sophisticated Lasers in Modern Beauty, Anti-aging Treatments
11. Modern medicine conquers witchcraft
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Modern Shift Work Patterns May Be Less Harmful to Health
(Date:3/24/2017)... ... ... According to a new study by NCPA Senior Fellow John R. Graham, ... Congress has directed the CBO to follow. The CBO itself previously recognized Obamacare would ... estimates a reduction in employer-based coverage due to the GOP reform, which is not ...
(Date:3/24/2017)... , ... March 24, 2017 , ... ... $100,000 for its innovative EcoQube Frame vertical micro-veggies garden on Kickstarter . ... for the product – with nearly 2,000 consumers (and counting) already backing the ...
(Date:3/24/2017)... ... March 24, 2017 , ... Viewers who like to ... critical historical facts, cultural practices, goods, services, and societal issues tend to appreciate and ... into the popular practice of utilizing running events for causes around the world. ...
(Date:3/24/2017)... , ... March 24, 2017 , ... “End Time GPS”: ... salient events will interrelate. “End Time GPS” is the creation of published author, ... expert while working on military munitions and space-vehicle projects. Now, at age ninety-one, he ...
(Date:3/23/2017)... ... March 23, 2017 , ... A recent report from the National ... preparation programs. The NCTQ report suggests, based on a review of GPA and SAT/ACT ... teacher quality in the U.S. It argues that this higher bar should be set ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... Calif. , March 24, 2017 /PRNewswire/ ... epigenetics company, and Hamilton Robotics, Inc., who ... announced an ongoing collaboration that teams Zymo ... and RNA and DNA extraction products with ... already created optimized methods for microbiomics and ...
(Date:3/24/2017)... 2017   The Accreditation Council for Medical ... in the pharmaceutical industry has appointed Dr. ... newly formed scientific advisory board. Dr. Chin will ... first ever medical affairs think tank within the ... the ACMA, please visit  www.medicalaffairsspecialist.org .  Connect ...
(Date:3/24/2017)... Research and Markets has announced the addition of ... to their offering. ... IPF pipeline is very strong with a total of 97 drug candidates. ... and Sanofi are involved in the development of the IPF therapeutics. The ... Phase III stage, 15 are in Phase II stage, 12 are in ...
Breaking Medicine Technology: