I am considering using a light box to adjust my circadian rhythm, which is now severely delayed. …

A reader asks: I am considering using a light box to adjust my circadian rhythm, which is now severely delayed. I...

I think I have delayed sleep phase syndrome (DSPS). I took the Automated Morningness-Eveningness Questionnaire and got some interesting suggestions I’d like to try....

A reader asks:  I think I have delayed sleep phase syndrome (DSPS). I took the Automated Morningness-Eveningness Questionnaire and got some...

What is delayed sleep phase disorder (DSPD)?

A reader asks:  What is delayed sleep phase disorder (DSPD)?Answer: DSPD is a circadian rhythm disorder in which the internal body clock...

Should use of a proper light box raise my vitamin D level to a significantly higher level?

A reader asks: Should use of a proper light box raise my vitamin D level to a significantly higher level?Answer: No, light...

Can I use a light box while lying on my stomach?

A reader asks: My ideal position for light therapy, as I am waking up, would be to use the lamp while...

If I wake up later than my ideal time on the weekend, should I still use the light therapy lamp for the same amount...

A reader asks: If I wake up later than my ideal time on the weekend, should I still use the light therapy lamp...

I am 34 years old and have a long history of difficulty sleeping. My doctor diagnosed me with delayed sleep phase disorder (DSPD). It...

A reader asks:  I am 34 years old and have a long history of difficulty sleeping. My doctor diagnosed me with...

I have just been diagnosed with delayed sleep phase. My body clock tries to make me sleep from 2 a.m. until 10 a.m., but...

A reader asks:  I have just been diagnosed with delayed sleep phase. My body clock tries to make me sleep from...

Several of my siblings suffered with severe cases of infectious mononucleosis. They all experienced delayed sleep phase, but this symptom of mono seems to...

A reader asks:  Several of my siblings suffered with severe cases of infectious mononucleosis. They all experienced delayed sleep phase, but...

What is Delayed Sleep Phase Syndrome (DSPS)?

A reader asks: What is Delayed Sleep Phase Syndrome (DSPS)? Answer: DSPS is a circadian rhythm disorder in which the internal body clock is synchronized...

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