Light Therapy for Prevention is “Light Hygiene”


“We are all light deficient and this deficiency may be the source of our physical and emotional problems.”

— Dr. John Ott

Health and Light / 3,000,000+ copies sold

Daily light hygiene is essential for better sleep, wakefulness and optimum wellness. Unfortunately, emphasis on personal hygiene has overlooked the essential need for daily, “light hygiene” required to regulate brain chemistry and circadian rhythms that control:

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


Strengthen your immune system to reduce your risk of disease.

The shift to an indoor lifestyle over the years has contributed to a serious uptick of body and mind dis-ease. Ideally, everyone should properly regulate their daily exposure to natural light, managing the time spent inside and out to naturally enhance immunity and reduce the risk of disease.

Being stuck in “biological darkness” due to reduced time in appropriate natural light —that our genes are programmed to respond to— profoundly affects every body system. Modern humans (in developed nations) do not spend enough time in “full-spectrum” sunlight that augments immunity and unwittingly 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.