Research Reveals Shiftworkers at Increased Risk for Breast and Prostate Cancers


More than 20 years of scientific research reveal that exposure to blue-rich light in the evening and at night increases the risk for certain types of cancers.

The subject was further explored in 2007 by the International Agency for Research on Cancer (IARC) and the World Health Organization (WHO), which revealed that shift work that impacts natural circadian rhythms is “probably carcinogenic to humans.”

Further exploration of the 2007 findings revealed:

  • Breast cancer increased 32% - 58% in women regularly exposed to light at night.
  • Prostate cancer increased up to 200% in men regularly exposed to light at night.
  • Blind women have a lower risk of breast cancer, and blind men have a lower risk of prostate cancer that is related to the degree of visual impairment.

Most energy efficient LEDs in the market today are rich in the blue wavelengths that at night trigger endocrine-sensitive cancers. 

To combat the effects of blue-rich light at night, CIRCADIAN Light introduced a DynamicBlu™ Spectrum control light solution that removes over 90% of the bioactive blue content at night to manage the risk of these types of cancers.

Click here to read the full whitepaper


Home  |  Privacy Policy  |  Terms of Use  |  Sitemap  |  Contact Us

Sign Up to Receive CIRCADIAN News.



Circadian Headquarters
2 Main Street, Suite 310
Stoneham, MA, 02180, USA

Contact Information
Local: 1.781.439.6300

©2020 Circadian ZircLight, Inc.
All rights reserved.