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THE “Indoor” Pandemic

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“Mal-illumination is to Light as Malnutrition is to Food.”

— Dr. John Ott
Health and Light / 3,000,000+ copies sold

Mal-illumination is the term coined by photobiology pioneer, Dr. John Ott to describe this little known syndrome that’s akin to malnutrition.


Being stuck in “biological darkness” due to reduced time in natural lightthat our genes are programmed to respond to profoundly affects every body system.

Light Regulates Biology

Modern humans (in developed nations) do not spend enough time in full-spectrum sunlight that augments immunity and spend most time indoors under unhealthy, limited-spectrum light that adversely impacts immunity.

Most indoor lighting and devices such as video screens are actually detrimental to this light-loop. They do not supply the correct wavelengths of light that are essential to naturally regulate brain chemistry and often have photobiotic qualities that tend to compromise immunity.

Good hygiene (for most people) has overlooked the essential requirement for daily, light hygiene required to regulate brain chemistry and circadian rhythms that control:

  • appetite
  • energy
  • mood
  • sleep
  • libido and so much more.



LIGHT HYGIENE…  it’s so simple