Welcome Newcomers!

Welcome to the newly redesigned Center for Environmental Therapeutics website. A description of the key sections of our website, with links, follows.

Please visit, and don’t forget to bookmark our homepage!

Would you like to be able to get to sleep when you want to? Do you want to get over your depression without pills? Do you know why seniors have sleep problems due to two changes in our bodies, and how to fix those difficulties?
CET has effective solutions, based on research, for many problems of mood, and sleep. View our boutique of articles, and select products, to improve your health, and the health of family members, young, and old.

Check our handpicked Featured Posts on how you can use research to take a power nap, or improve your mood. Discover pioneering studies on how light therapy may help people with problems from Parkinson’s Disease to fibromyalgia. CET bloggers Michael Terman, PhD, and Abigail Strubel, MA, LCSW, contribute reflections here.

The Main Section. Here you’ll find our posts broken down by subject. Take care to notice the More dropdown to access the rest of the subjects, as well as the Load More button that may unveil additional articles in that particular chosen subject.

Social Media! Be sure to connect with us via Facebook and Twitter to stay up to date on our latest posts and bits of wisdom!

Ask Our Experts Q&A’s. This is a treasure trove of questions asked by people just like you, and answered by our team of experts. Have a question yourself? Be sure to ask!

More than a million people have taken our three confidential Automated Online Self-Assessments. Take one (or all) of them, and share the results with your therapist! Results can guide treatment decisions, such as choosing the best time of day for an individual to begin light therapy, if light therapy is appropriate.

Our Fact Sheets for the Public cover topics relating to sleep and mood. One sheet, tailored to the challenges the elderly face in getting a good night’s sleep as their eyes change with age, is of special interest for a increasing number of people.

Specialty Pages cover topics from Bedtime for Children to Daylight Saving Time, and from Chronotypes to Light Therapy.

Light Therapy and Circadian Rhythms, a course of three videos, covers:

  • the biology of circadian rhythms
  • how to set light and dark for personal and work schedules
  • psychological factors in the origin and treatment of seasonal affective disorder.

This Treasury of carefully chosen selection of seminal papers and books gives an overview of major topics in the research, and applications, of the science of circadian rhythms. The introductions to each section can stand alone as a rich, often fascinating, history of the field.

Our suggestions range from manuals offering step-by-step guidance for chronotherapy to reflections on the evolution of circadian rhythms within the cycle of day, and night.

This collection of assessment instruments, designed and produced by the Clinical Chronobiology and Biometrics Research groups at Columbia University/New York State Psychiatric Institute, is available as a set at CET. Whether or not you plan to purchase the collection, you may want to see what tools health professionals find useful in diagnosing and disorders and treating sleep problems.

Please tell your friends and colleagues about cet.org, the go-to source of resources on sleep, mood, and circadian rhythms.

I want to help! ❤️