Study finds that morning people are less likely to get breast cancer

One in 100 women who label themselves as morning people developed breast cancer, while two in every 100 women who aren’t morning people develop it.

Well here is another great reason to be a morning person. New research conducted in the UK found that women who wake up earlier in the morning have a lower risk of developing breast cancer.

The researchers from the University of Bristol in England looked at data from 180,215 women enrolled with the UK Biobank project, and 228,951 women who had been part of a genome-wide association study of breast cancer led by the international Breast Cancer Association Consortium and found that women who prefer mornings have a 40% to 48% reduced risk of developing that type of cancer.

Basically, one in 100 women who label themselves as morning people developed breast cancer, while two in every 100 women who aren’t morning people develop it.

Findings show that sleep and breast cancer are linked

And bad news if you are a big sleeper. The study also found that women who sleep more than seven to eight hours have a 20% increased risk for each additional hour after that that they slept.

Dr. Rebecca Richmond, a research fellow in the Cancer Research UK Integrative Cancer Epidemiology Program and the Epidemiology Unit at the University of Bristol, said in a presentation about the study reported by CNN: “We know that sleep is important generally for health. These findings have potential policy implications for influencing sleep habits of the general population in order to improve health and reduce the risk of breast cancer among women.”

She added, “Sleep is likely to be an important risk factor for breast cancer, but it isn’t as large as other well-established risk factors like BMI or alcohol.”

The study used a genetic method known as Mendelian randomization.

Meredith Lepore|is the Deputy Editor of Ladders and can be reached at mlepore@theladders.com.