Advertising and writing about light therapy in the media: why are the eyes nearly always closed?
In five minutes of web-browsing for a light therapy lamp, a motif repeats itself — beautiful models (nearly always women) with...
Seeking Treatment for Light Therapy, and Other Chronotherapy
CET does not recommend trying light therapy, or any other circadian rhythm treatment, without the supervision of a professional. Although side effects...
Light boxes as a commodity: what next?
A message to everyone from the Center for Environmental TherapeuticsDepression poses a worldwide risk and burden for an estimated...
CET’s Basic Guide to Light Therapy
Many individuals with depression are unwilling or unable to take medication or have found it ineffective. Bright light therapy box is now established as...
Letter to My “Quarterly Club” Patients
I write this on August 1, 2020. August 1st is a date celebrated by the ancients, as Lammas, or the harvest holiday, when the...
Light Therapy: Its Discovery and Applications
How it all began...Light therapy is one of the most exciting and scientifically interesting developments in medicine today. First, it is one of the...
How to Select a Light Box
In the best of all possible worlds, every light box on the market should have undergone clinical trials to show its efficacy, and should...
Bright Light Exposure Risks
Cautionary Notes About Bright Light Exposure
Light energy can interact with and damage skin and eye tissues, especially when a photosensitizing molecule—whether from a drug...
Afternoon light: the key for more restful sleep in older adults
Consolidated sleep is vital for both physical and mental well-being. Yet, our ability to maintain uninterrupted nighttime sleep decreases as we age. The sleep-wake pattern...
How does light work?
Light is a powerful antidepressant and is also the most powerful known zeitgeber (time-setter) for the internal biological clocks of the body.
Surprisingly,...









