A new large-scale research has found that women who are naturally morning people may have a lower risk of breast cancer than those who are night owls.

Carried out by United Kingdom, United States, French and Norwegian researchers, the new study looked at 180,216 women taking part in the UK Biobank study, a large long-term study which includes genomic data on more than half a million UK residents, and 228,951 women in the Breast Cancer Association Consortium study.