A recent study by the Lighting Research Center at Rensselaer Polytechnic Institute found that a daytime lighting installation in a long-term memory care facility improved the health and well-being of patients.

Individuals with Alzheimer’s disease and related dementias often have trouble sleeping and experience daytime irritability. The study assessed whether customized daytime lighting could improve the sleep and mood of Alzheimer’s patients living in long-term care facilities.

The study included 43 subjects diagnosed with Alzheimer’s disease and related dementias. The subjects were exposed to customized lighting for 4 weeks, followed by an additional 4-week “washout” period.

The lighting used for the study utilized color tuning to alter the color temperature, output, and distribution of light and was placed in spaces where patients spent most of their waking hours .

The study outcome showed improvement in the subjects’ sleep quality, helping to build the case for more refined human-centric lighting installations for senior living and memory care facilities, hospitals, etc.

While early stage solutions like color tuning help build the case for healthy lighting, it falls short of delivering the exact light spectrum necessary to be considered true “circadian lighting.”

By only altering the color temperature of light by the time of day, color tuning does nothing to deliver the correct content of blue light during the day and safe level of less than 2% at night.

Learn more about the health risks of blue light at night, and what CIRCADIAN Light is doing to help.

 CIRCADIAN Light has just been approved by the American Institute of Architects to offer AIA Continuing Education courses for Health, Safety, and Welfare credits.

Our first course offering is called "Circadian Lighting for Workplaces: Protecting Health and Improving Productivity." The course will educate architects and lighting designers that are specifying circadian lighting and want to gain an understanding of the key differences between the day, evening and nighttime impacts of the blue content of white light on circadian rhythms, human health and productivity. 

Visit http://circadianlight.com/circadian-light-workplaces for more information, or to register. 

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. 

CIRCADIAN Light LED Breakthrough Verified by UL: White Light with Less than 2% Blue Content at Night 

STONEHAM, MA -----   The significant health risks linked to the use of LED lights at night may have finally been solved by an innovative new LED technology. CIRCADIAN® Light’s new Night-Safe™ LEDs are the first lights verified by UL, the leading global safety certification company, to emit white light with less than 2% blue content at night. This medically-significant breakthrough addresses the growing scientific evidence that exposure at night to the 10 - 30% blue light content of conventional LEDs has a profound negative effect on many aspects of human health and performance.

Read full press release

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