light boxes

Light boxes as a commodity: what next?

A message to everyone from the Center for Environmental Therapeutics Depression poses a worldwide risk and burden for an estimated...
sunny morning environmental therapeutics

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,...

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 closed eyes, swooning...

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...

Light Therapy Provides Major Improvement in Parkinson’s Disease

Parkinson’s disease (PD) presents as problematic when developing effective treatments.  In discovering that dopamine was deficient in post-mortem brains of PD patients, one would...

An Ideal Marriage: Basic and Clinical Research in Chronobiology

Researchers studying single-cell blue-green algae or zebra fish, fruit flies or hamsters, often write at the bottom of their grant applications that, “Understanding basic...

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...

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...

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...

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 are rare,...