Exposure to light at night renders breast cancer completely resistant to drug

[News]

Exposure to light at night, which shuts off nighttime production of the hormone melatonin, renders breast cancer completely resistant to tamoxifen, a widely used breast cancer drug, says a new study by Tulane University School of Medicine cancer researchers.

More... (http://www.news-medical.net/news/20140725/Exposure-to-light-at-night-renders-breast-cancer-completely-resistant-to-drug.aspx)