All About Light Therapy

Light therapy was first developed as a treatment for Seasonal Affective Disorder (SAD). Now we know that light therapy is also effective for major depression throughout year, as we show in A Game Changer in the Treatment of Depression.

And the list goes on, with convincing demonstrations of light therapy for delayed sleep phase insomnia, mood swings with the menstrual cycle, depression during pregnancy, bipolar depression, Parkinson’s Disease, fibromyalgia, and more.

CET is here to acquaint you to these remarkable achievements in environmental therapeutics, along with important caveats:

If you’re having trouble getting to sleep, be sure to read Does Counting Sheep Work? And What Can You Do If It Doesn’t?

We delve further with coverage of The Effect of Light on Health, and our curated collection of key scholarly literature, Science of Circadian Rhythms and Chronotherapy.

Light Therapy for Problems with Mood and Sleep

theresa with light boxLight Therapy for Beginners: Six Steps

Depressed, but not interested in taking drugs to improve your mood? Find out whether light therapy is for you, how to choose a light box, what time of day is best for you personally, and more.



a game changer in the treatment of depression

A Game Changer in the Treatment of Depression

A classic experiment showed that light therapy was more effective than Prozac (fluoxetine). What does that mean for professionals, and for patients?



Does counting sheep work?Does Counting Sheep Work? And What Can You Do If It Doesn’t?

If you go to bed by midnight, but find it impossible to fall asleep until 3 a.m., you may have Delayed Sleep Phase Disorder. What can light therapy do for you?



light box
Drawing for CET by Theresa Desrochers © 2018 |

Bright Light Therapy

How was bright light therapy discovered as a treatment for Seasonal Affective Disorder (SAD)? Why does it help people with sleep disorders? What other problems might it work for?



light therapy checklist blue ribonLight Box Selection Criteria

The wrong light box can be harmful, or worthless. Here are the five things you need to look for to get a light box that is safe and effective.



Bright light exposure risksBright Light Exposure Risks

How old are you? Are you on medication that makes your eyes sensitive to light? Do you have certain genetic conditions? Find out what you need to know to make sure light therapy is safe for you.



Light Therapy for Other Problems


Spotlight on ParkinsonsSpotlight on Parkinson’s Disease

Light therapy can help people with this progressive movement disorder reduce excessive daytime sleepiness, improve better sleep quality, and fall asleep more easily. And there’s more…



fibromyalgiaA New Way to Help People with Fibromyalgia?

One group of people with fibromyalgia had light therapy; another group did not. How did they differ at the end of the experiment? And how did light therapy compare with other useful treatments?


Additional Resources

The Delux light sensorDeLUX Light Sensor

Discover the five factors that determine lux level for light therapy, learn how to find your sweet spot with the DeLUX Light Sensor, and find out how to get a free sensor (with a string attached).




light-box Insurance reimbursementInsurance reimbursement Form for Light Boxes

In Switzerland, reimbursement for light boxes is a given. In the US, however, reimbursement is not guaranteed. Nevertheless, this insurance reimbursement form has information that may help.






Learn more about the Light Therapy Lamp from Northern Light Technologies