Study: Night-Shift Increases Breast Cancer Risks

A new study links the night-shift to an increase risk in breast cancer for women.
Unfortunate news for women who spend most of their career working the night-shift, they may have an increased risk for breast cancer.

Researchers in Canada studied over one thousand women with breast cancer, and compared them to women the same age who did not have the disease.

They found those who had worked the night shift for thirty years or more were two times more likely to develop breast cancer.

Outside studies have suggested a sleep hormone may be affected by shift work, and that is what increases the risk for breast cancer.
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