Friday, October 19, 2018 | ePaper

Women who do night shifts may be at risk of cancer

  • Print


Life Desk :
Long-term night shift work in women was associated with risk for nearly a dozen types of cancer. Breast, skin, and gastrointestinal cancer was associated with night shift work in women. Nurses, compared to other professionals are at the highest risk of breast cancer.
Night shift work was associated with women having an increased risk of breast, skin, and gastrointestinal cancer, according to a review of various studies.
Xuelei Ma and colleagues performed a meta-analysis using data from 61 articles comprising 114,628 cancer cases and 3,909,152 participants from North America, Europe, Australia, and Asia.
'For every 5 years of night-shift work, the risk of breast cancer increases by 3.3%'
Breast cancer is the most diagnosed cancer among women worldwide, most previous meta-analyses have focused on understanding the association between female night shift workers and breast cancer risk, but the conclusions have been inconsistent. The team analyzed whether long-term night shift work in women was associated with risk for nearly a dozen types of cancer.
The studies were analyzed for an association between long-term night shift work and risk of 11 types of cancer. A further analysis was conducted, which looked specifically at long-term night shift work and risk of six types of cancer among female nurses.
After stratifying the participants by location, Ma found that an increased risk of breast cancer was only found among female night shift workers in North America and Europe.
"We were surprised to see the association between night shift work and breast cancer risk only among women in North America and Europe," said Ma. "It is possible that women in these locations have higher sex hormone levels, which have been positively associated with hormone-related cancers such as breast cancer."
Among female nurses alone, those who worked the night shift had an increased risk of breast (58 percent), gastrointestinal (35 percent), and lung cancer (28 percent) compared with those that did not work night shifts. Of all the occupations analyzed, nurses had the highest risk of developing breast cancer if they worked the night shift.
"Nurses that worked the night shift were of a medical background and may have been more likely to undergo screening examinations," noted Ma. "Another possible explanation for the increased cancer risk in this population may relate to the job requirements of night shift nursing, such as more intensive shifts."
The research team also performed a dose-response meta-analysis among breast cancer studies that involved three or more levels of exposure. They found that the risk of breast cancer increased by 3.3 percent for every five years of night shift work.
"By systematically integrating a multitude of previous data, we found that night shift work was positively associated with several common cancers in women," said Ma. "The results of this research suggest the need for health protection programs for long-term female night shift workers.
"Our study indicates that night shift work serves as a risk factor for common cancers in women," said Ma. "These results might help establish and implement effective measures to protect female night shifters. Long-term night shift workers should have regular physical examinations and cancer screenings.
"Given the expanding prevalence of shift work worldwide and the heavy public burden of cancers, we initiated this study to draw public attention to this issue so that more large cohort studies will be conducted to confirm these associations," he added.
Study Limitations: A limitation of this work is a lack of consistency between studies regarding the definition of "long-term" night shift work, with definitions including "working during the night" and "working at least three nights per month." Additional limitations include significant between-study heterogeneity and publication bias.

Source: Medindia

More News For this Category

How much screen time should kids be allowed each day?

How much screen time should kids be allowed each day?

Randy Kulman Ph.D :One of the most common complaints I hear from parents in my practice is that their kids spend too much time staring at screens. While this

Launch of Smiling Heart Clinic at United Hospital

Launch of Smiling Heart Clinic at United Hospital

Life Desk :"I am 76 and I have never witnessed in my life that a patient is called from hospital to enquire whether he is doing okay", this is

Are screens endangering your love life?

Are screens endangering your love life?

Susan Heitler Ph.D. :There's no doubt about it.  Screens are here to stay.  All of us have married the internet "for better or for worse, in sickness and in

Save the ecosystem

Save the ecosystem

Wahseka Lanee :Ecosystem consists of all living and nonliving things that depend on each other to survive people are destroying different ecosystem by different way and threats. Ecosystem is

An inspirational story of love

An inspirational story of love

Linda and Charlie Bloom :Despite his age of 79, Jose was possessed of the spirit, curiosity, sense of humor, and playfulness of a child. That would be enough to make

BD preparing for world skills competition 2019 in Russia

BD preparing for world skills competition 2019 in Russia

Life News :Bangladesh is going to participate at World Skills Competition 2109 at Kazan in Russia aiming at branding the country at the global forum as a skilled nation.As part

World Breast Cancer Awareness Month

World Breast Cancer Awareness Month

Life News :Every year 22,000 women are diagnosed with breast cancer in Bangladesh. Among them, 70 percent of the women die without any medical treatment. Breast cancer is the second

Is social media making you lonely?

Is social media making you lonely?

Shainna Ali Ph.D., LMHC :We are plagued by a loneliness epidemic.  In the last fifty years, regardless of geographic location, gender, race, or ethnicity, rates of loneliness have doubled in

Small exercise breaks during work recharges brain

Small exercise breaks during work recharges brain

Life Desk :Getting a mental blockage while at work is a usual occurrence. During the long working hours, if the thinking part of your body is not given a

United Hospital observes World Heart Day

United Hospital observes World Heart Day

Life Desk :The theme of World Heart Day for the year 2018 is "My heart, Your heart". Like every year, United Hospital observed World Heart Day this year in