Research published in the British Medical Journal (BMJ) has found links between sleep habits and cancer risk. The study found that being a morning person (someone who prefers getting up earlier in the morning) reduced your risk of developing breast cancer. Evening people and those sleeping for longer than the recommended seven to eight hours a night were shown to have a heightened risk of breast cancer.
This is a companion discussion topic for the original article at https://patient.info/news-and-features/being-a-morning-person-lowers-risk-of-breast-cancer