Breast Cancer Risk reduced by Good Night's Sleep

A study led by Dr. Eva Schernhammer, an epidemiologist at Brigham and Women's Hospital in Boston, says that the risk of breast cancer may be reduced by getting a good night's sleep.

According to the study, women with the highest levels of melatonin, a hormone that the body produces when a person is sleeping in the dark, have a forty percent lower risk of developing breast cancer than women with low levels of melatonin.