I’d like to try a dawn simulator because I want to get up at...

Dawn Simulator

I have at least some degree of depression on a year-round basis with a...

Seasonal Affective Disorder

Does the changing length of day and the time of natural sunrise/sunset affect the...

Seasonal Affective Disorder

What is delayed sleep phase disorder (DSPD)?

Sleep Phase Delay

I am a 22-year-old female who has had chronic fatigue syndrome (CFS) for almost...

Seasonal Affective Disorder

Can light therapy alter endocrine hormone levels? There may be some evidence that TSH...

Seasonal Affective Disorder

Is it possible to have a rare case of extreme advance of sleep, which...

Sleep Phase Advance

Does seasonal affective disorder subside in more temperate climates?

Seasonal Affective Disorder

I experience advanced sleep phase syndrome (ASPS) in addition to SAD. My understanding of...

Sleep Phase Advance

How do I know if I am sensitive to the UV lights particularly with...

UV Light
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