Exposure to light at night does not increase breast cancer risk, major new study suggests

In the News
Written by Zoey Richards

Exposure to light at night while sleeping does not increase a woman’s risk of developing breast cancer, a major prospective study funded by charity Breast Cancer Now suggests.

Zoey Richards
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Higher BMI is associated with a lower risk of breast cancer before the menopause
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Smoking – particularly if started during adolescence – is associated with an increased risk of breast cancer, major new study finds