Physiological Need for Light – Parts 2.3 & 2.4 of a 7 Part Series

Physiological Need for Light – Parts 2.3 & 2.4 of a 7 Part Series

Welcome to parts 2.3 & 2.4 of the 7-part Lighting for Health series! Today, we cover the the relationship between lighting and breast cancer, as well as the effect of color in our built environments.


Light and Breast Cancer

  • Light is primary regulator of circadian functions in humans.

  • Circadian disruption has been found to affect the etiology of breast cancer in women.

  • Breast cancer risk was found to increase in women who worked graveyard shifts within the 10 years before being diagnosed with cancer.




  • In Hindu metaphysical tradition, chakras are centers of life force, or vital energy

  • Respond to vital points on the physical body

  • Used in tantric and yogic traditions of Hinduism and Buddhism


  • Traditional Chinese medicine

  • A path through which the life energy “qi” flows to the body

  • 12 principal meridians divided into yin and yan groups, each associated with a region of the body


  • Color therapy is the use of color in various forms for the purpose of creating balance and health in the human system

  • Human body has 12 major electrical pathways that are called meridians that deliver life force energy through the nervous system to cells and organs.

  • There are 12 major colors in the visible light spectrum and 12 notes in the musical scale that each correspond to the 12 electrical pathways in the body.

  • Ancient cultures have used light and sound therapy principles for thousands of years.

  • Light therapy uses light on eyes, acupuncture points, meridians, and the chakra system in order to communicate the proper frequency to that area of the body.


  • NASA conducted studies on the use of LEDs to treat pediatric bone-marrow transplant patients that suffer from oral Mucositis

  • Oral Mucositis is a side effect of chemotherapy and radiation treatments which produces ulcerations in the mouth and throat and severe pain

  • The study utilized a 3×5 inch flat array of LEDs that was held on the outside of a patient’s cheeks for 60 seconds per day.


  • 53 percent of the treated patients developed Mucositis, compared to close to 90 percent of untreated patients.

  • The pain was found to be much less for the treated patients


Join us next time in the Lighting for Health series as we explore ‘Mental Illness and Light’.