Katalay.net

Breast Cancer Risk: Are You An Early Riser?

0 669

Breast Cancer Risk: Are You An Early Riser?

According to a recent large-scale study, women who are "morning people" might have a reduced risk of developing breast cancer.

Sleep and circadian rhythms have received a great deal of attention in recent years.

A daily cycle governs each of us, and we are all at the mercy of sleep.

However, despite the all-pervasive nature of sleep, it still holds a wealth of mysteries. Sleep is clearly important for health, but researchers have not yet determined its exact role in sickness and well-being.

The most pressing questions relating to sleep and daily rhythms include how these factors affect disease states and whether it would be possible to modify them to reduce health risks.

Recently, researchers designed a study to investigate how sleep might contribute to breast cancer risk.

Breast Cancer Risk: Are You An Early Riser?

Sleep and breast cancer

Dr. Rebecca Richmond, a research fellow in the MRC Integrative Epidemiology Unit at the University of Bristol in the United Kingdom and the Cancer Research U.K. Integrative Cancer Epidemiology Programme, headed up the study.

Dr. Richmond's team took data from the UK Biobank project, a long-term study aiming to answer questions about the genetic and environmental causes of disease. The team also accessed information that the international Breast Cancer Association Consortium (BCAC) had obtained from a genome-wide association study of breast cancer.

In total, the researchers used data from more than 385,000 women.

Dr. Richmond summarizes their approach: "Using genetic variants associated with people's preference for morning or evening, sleep duration, and insomnia, [...] we investigated whether these sleep traits have a causal contribution to the risk of developing breast cancer."

The team presented the study findings earlier this week at the 2018 National Cancer Research Institute Cancer Conference in Glasgow, U.K.

To spot trends in sleep patterns and breast cancer risk, the team used a method called Mendelian randomization. In this type of analysis, scientists use measured variation in genes of known function to assess their effect on disease outcomes. In this case, they studied gene variants that affect sleep traits.

As Dr. Richmond explains, this approach is useful for minimizing the impact of potentially confounding variables:

"The method of Mendelian randomization applied in this research is particularly useful at identifying causal risk factors for disease since the genetic variants identified in relation to the sleep traits are not likely to be influenced by any external or environmental factors, nor by the development of cancer, and can, therefore, be used to determine cause and effect relationships."

Breast Cancer Risk: Are You An Early Riser?

Lark or owl?

The researchers focused on genes that have an association with certain sleep factors, such as a preference for morning or evening, sleep duration, and insomnia.

Analysis of the BCAC data showed that women who preferred mornings, nicknamed larks, had a breast cancer risk that was 40 percent lower than that of those who preferred the night, known as owls.

Additionally, the results showed that women who slept for longer than the recommended 7–8 hours per night had a higher risk, which increased by 20 percent for every extra hour that they slept.

The team noted similar results from an analysis of the UK Biobank data. Being a lark rather than an owl reduced breast cancer risk by 48 percent. However, these data revealed less evidence of an interaction between sleep duration and breast cancer.

Naturally, a study of this nature is likely to pose as many questions as it answers. As such, the researchers hope to continue this line of investigation.

Breast Cancer Risk: Are You An Early Riser?

Dr. Richmond says, "We would like to do further work to investigate the mechanisms underpinning these results, as the estimates obtained are based on questions related to morning or evening preference rather than actually whether people get up earlier or later in the day."

She continues, "In other words, it may not be the case that changing your habits changes your risk of breast cancer; it may be more complex than that."

Although more research is necessary before we understand whether altering sleep patterns could reduce breast cancer risk, the findings of this study provide new insight into the relationship between sleep and health.

Brave Browser
Write a Review

Facebook Comments

Booking.com

Recent Posts

10 Amazing Health Benefits Of Apricot Juice10 Amazing Health Benefits Of Apricot Juice

Originally from China, the use of apricots began almost...

0 61
Lowering Your Cholesterol Can Reduce Your Risk For This DementiaLowering Your Cholesterol Can Reduce Your Risk For This Dementia

About 5.8 million Americans currently have Alzheimer's ...

0 111
What Exercises Burn the Most Calories: 10 Proven WorkoutsWhat Exercises Burn the Most Calories: 10 Proven Workouts

When you exercise, your body normally uses fat and carb...

0 107

Most Read

Common Drug May Increase Lung Cancer RiskCommon Drug May Increase Lung Cancer Risk

A study published this week in The BMJ concludes that t...

0 1.476
What Can Cause Joint Pains In Children?What Can Cause Joint Pains In Children?

When a child complains of joint or leg pains, parents o...

0 1.392
Common Drugs Lead To Millions Of Cases Of Lung DiseaseCommon Drugs Lead To Millions Of Cases Of Lung Disease

Common drugs that doctors prescribe to treat heart prob...

0 1.252

Popular Posts

This Honey, Lemon And Cinnamon Drink Will Help You Lose Pounds In A WeekThis Honey, Lemon And Cinnamon Drink Will Help You Lose Pounds In A Week

The most effective way to lose weight is to do aerobic ...

1 905
Are Probiotics Good or Bad for Crohn's Disease?Are Probiotics Good or Bad for Crohn's Disease?

Probiotics are living microorganisms, including bacteri...

0 1.111
What You Need To Know About LymphomaWhat You Need To Know About Lymphoma

Lymphoma is a cancer of the lymphatic system. It affect...

0 1.026

Donate

Tags