Featured Research

from universities, journals, and other organizations

Shift work linked to increased risk of heart attack and stroke

Date:
July 27, 2012
Source:
BMJ-British Medical Journal
Summary:
Shift work is associated with an increased risk of major vascular problems, such as heart attacks and strokes, concludes a new study.

Shift work is associated with an increased risk of major vascular problems, such as heart attacks and strokes, concludes a study published on the website of the British Medical Journal.

Related Articles


This is the largest analysis of shift work and vascular risk to date and has implications for public policy and occupational medicine, say the authors.

Shift work has long been known to disrupt the body clock (circadian rhythm) and is associated with an increased risk of high blood pressure, high cholesterol and diabetes, but its association with vascular disease is controversial.

So a team of international researchers analyzed the results of 34 studies involving over two million individuals to investigate the association between shift work and major vascular events. Shift work was defined as evening shifts, irregular or unspecified shifts, mixed schedules, night shifts and rotating shifts. Control groups were non-shift (day) workers or the general population.

Differences in study design and quality were taken into account to minimize bias.

Among the 2,011,935 people in the studies more than 17,359 had some kind of coronary event, 6,598 had myocardial infarctions (heart attacks), and 1,854 had ischemic strokes caused by lack of blood to the brain. These events were more common among shift workers than other people: shift work was associated with an increased risk of heart attack (23%), coronary events (24%) and stroke (5%). These risks remained consistent even after adjusting for factors such as study quality, socioeconomic status and unhealthy behaviors in shift workers.

Night shifts were associated with the steepest increase in risk for coronary events (41%). However, shift work was not associated with increased death rates from any cause.

Although the relative risks were modest, the authors point out that the frequency of shift work in the general population mean that the overall risks are high. For Canada -- where some of the study's authors are based and where 32.8% of workers were on shifts during 2008-9 -- 7.0% of myocardial infarctions, 7.3% of all coronary events, and 1.6% of ischemic strokes could be attributed to shift work.

The authors say their findings have several implications. For example, they suggest screening programs could help identify and treat risk factors, such as high blood pressure and cholesterol levels. Shift workers could also be educated about symptoms that could indicate early heart problems.

Finally, they say more work is needed to identify the most vulnerable groups of shift workers and the effects of modifying shift patterns on overall vascular health.


Story Source:

The above story is based on materials provided by BMJ-British Medical Journal. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. V. Vyas, A. X. Garg, A. V. Iansavichus, J. Costella, A. Donner, L. E. Laugsand, I. Janszky, M. Mrkobrada, G. Parraga, D. G. Hackam. Shift work and vascular events: systematic review and meta-analysis. BMJ, 2012; 345 (jul26 1): e4800 DOI: 10.1136/bmj.e4800

Cite This Page:

BMJ-British Medical Journal. "Shift work linked to increased risk of heart attack and stroke." ScienceDaily. ScienceDaily, 27 July 2012. <www.sciencedaily.com/releases/2012/07/120727082540.htm>.
BMJ-British Medical Journal. (2012, July 27). Shift work linked to increased risk of heart attack and stroke. ScienceDaily. Retrieved February 28, 2015 from www.sciencedaily.com/releases/2012/07/120727082540.htm
BMJ-British Medical Journal. "Shift work linked to increased risk of heart attack and stroke." ScienceDaily. www.sciencedaily.com/releases/2012/07/120727082540.htm (accessed February 28, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, February 28, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Reuters - Innovations Video Online (Feb. 27, 2015) A dongle that plugs into a Smartphone mimics a lab-based blood test for HIV and syphilis and can detect the diseases in 15 minutes, say researchers. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Doctor Says Head Transplants Possible Within Two Years

Doctor Says Head Transplants Possible Within Two Years

Buzz60 (Feb. 27, 2015) An Italian doctor is saying he could stick someone&apos;s head onto someone else&apos;s body. Patrick Jones (@Patrick_E_Jones) reports. Video provided by Buzz60
Powered by NewsLook.com
How Your Dentist Could Help Screen You For Diabetes

How Your Dentist Could Help Screen You For Diabetes

Newsy (Feb. 27, 2015) A new study from researchers at New York University suggests dentists could soon use blood samples taken from patients&apos; mouths to test for diabetes. Video provided by Newsy
Powered by NewsLook.com
The Best Tips to Makeover Your Health

The Best Tips to Makeover Your Health

Buzz60 (Feb. 27, 2015) If you&apos;re looking to boost your health this season, there are a few quick and easy steps to prompt you for success. Krystin Goodwin (@Krystingoodwin) has the best tips to give your health a makeover this spring! Video provided by Buzz60
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