|
|
|
|
|
24th Shawwal 1435 | Thursday, Aug 21, 2014
Health

Night shifts `raise ovarian cancer risk`

Friday, 15 March 2013
Comments(0)
Washington, March 15:

Women who work the night shift may have an increased risk of ovarian cancer, new research has warned.

The authors base their findings on 1101 women with the most common type (epithelial) of advanced ovarian cancer; 389 with borderline disease; and a comparison group of 1832 women without ovarian cancer.

The women, who were all aged between 35 and 74, were asked about the hours they worked, including whether they had ever worked night shifts.

Among the women with invasive cancer, around 1 in 4 (26.6 percent; 293) had ever worked nights, compared with 1 in 3 (32.4 percent; 126) of those with borderline disease and around 1 in 5 (22.5 percent; 412) of the comparison group.

The stint of night shifts averaged between 2.7 and 3.5 years across all three groups of women, with jobs in healthcare, food preparation and service, and office and admin support the most common types of employment.

Working night shifts was associated with a 24 percent increased risk of advanced cancer and a 49 percent increased risk of early stage disease compared with those who worked normal office hours.

A greater proportion (27 percent) of women who described themselves as "owls" had worked night shifts than women (20 percent) who were "larks"(morning types).

The risks of either advanced ovarian cancer were slightly higher (29 percent) among "larks" than among "owls" (14 percent), although difference this was not statistically significant. Findings were similar for borderline tumours - 57 percent and 43 percent for "larks" and "owls," respectively.

Only women aged 50 and above were significantly more likely to have ovarian cancer if they had worked nights.

One possible explanation could be linked to melatonin, a powerful hormone that is normally produced at night, but suppressed by ambient light, and which regulates reproductive hormones, particularly oestrogen.

Melatonin also scavenges harmful free radicals and boosts production of other antioxidants in the body.

The study has been published in Occupational and Environmental Medicine. (ANI)

Latest News

Himachal hit by tremors

Earthquake tremors of magnitude 5 on richter scale were felt today in Himachal Pradesh at around 1:40 p.m. The epicenter of the earthquake w ...

Rijiju calls for joint mechanism to resolv...

Union Minister of State (MoS) for Home Affairs Kiren Rijiju said here on Thursday that seeing the rising tension in Golaghat district, a joi ...

Only five-star hotels to serve liquor in K...

Starting next fiscal, only five-star hotels in Kerala will be serving liquor, while the state will see prohibition in force in 10 years, Chi ...

Related News

Sanjiv Chaturvedi not eligible for AIIMS C...

Union Minister of Health and Family Welfare Dr.Harsh Vardhan said here on Thursday that Indian Forest Service officer Sanjiv Chaturvedi is n ...

Special oral health hospitals across India soon

The government plans to set up hospitals exclusively for oral health care at both the national and r ...

Teenage sleeplessness may lead to obesity

Teenagers who do not get enough sleep may tend to become obese in course of time, says a new researc ...

Post new comment

CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
Image CAPTCHA
Copy the characters (respecting upper/lower case) from the image.

Rs. 27730 (Per 10g)

Opinion Poll
Do you think KCR would continue celebrating all national events at Golconda Fort beginning from Independence Day?
YesNoCan't say

Matrimony | Photos | Videos | Search | Polls | Archives | Advertise | Letters

© The Siasat Daily, 2012. All rights reserved.
Jawaharlal Nehru Road, Abids, Hyderabad - 500001, AP, India
Tel: +91-40-24744180, Fax: +91-40-24603188
contact@siasat.com