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I’m interested in trying negative air ionization therapy while I sleep, for depression which...

Negative Air Ions

Is there any correlation between core body temperature and SAD? I have noticed that...

Seasonal Affective Disorder

How can I determine the optimal number of hours of sleep for me? I...

Sleep

I purchased a negative air ion generator from the CET store almost two years...

Negative Air Ions

Does SAD typically get more severe over the years? Is it common to have...

Seasonal Affective Disorder

Are there contact lenses available that perform the same function as the blue-blocker glasses...

Sleep & Light

What is the relationship, if any, between negative air ions and ozone?

Negative Air Ions

I am a flight attendant, so my sleep patterns are erratic. My work schedules...

Seasonal Affective Disorder

I am 34 years old and have a long history of difficulty sleeping. My...

Sleep Phase Delay

What is known about the effect of electromagnetic radiation (EMR) from sitting so close...

Light Box
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Center for Environmental Therapeutics

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Founded in 1994, CET is an independent, non-profit professional organization dedicated to education and research on new environmental therapies.

We offer a variety of services, including background information, self-assessment questionnaires, and environmental therapy products.

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