Scientific evidence points to a connection between the development of breast cancer and circadian rhythm. Studies have shown higher rates of breast cancer in women who work night-shifts. Some scientists have labelled the disruption of circadian rhythms a carcinogen.
Exposure to light at night disrupts melatonin production - an important hormone that plays a role in cancer prevention. Melatonin has many other roles:
- it regulates other hormones
- acts as an immune modulator
- assists with estrogen metabolism.
Adapted from Dr. Alexander Mostovoy’s blog, June 30, 2014.
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