Levothyroxine use and the risk of breast cancer: a nation-wide population-based case-control study.
Chieh-Chen WuYa-Yu YuHsuan-Chia YangPhung Anh NguyenTahmina Nasrin PolyMd Mohaimenul IslamUsman IqbalHafash Arshed Ali KhanYao-Chin WangYung-Tzu ChengYu-Chuan LiWen-Shan JianPublished in: Archives of gynecology and obstetrics (2018)
The results of the present study are the first to suggest that levothyroxine use increased the risk of breast cancer. However, a larger long-term prospective randomized-controlled trial specifically designed to assess the effect of levothyroxine use on the risk of developing breast cancer is needed.