The morningness-eveningness questionnaire (AutoMEQ) indicated my melatonin onset as 9:45 p.m. and my ideal light therapy session time as 6:30 a.m. I usually sleep...

A reader asks: The morningness-eveningness questionnaire (AutoMEQ) indicated my melatonin onset as 9:45 p.m. and my ideal light therapy session time...

Would light therapy be effective for a person who is totally blind? Some people with blindness seem to have mood swings with the seasons....

A reader asks: Would light therapy be effective for a person who is totally blind? Some people with blindness seem to...

My goals are to regularize my sleep-wake cycle and treat some mild but persistent depression. At your suggestion, I took your Automated Morningness-Eveningness Questionnaire...

A reader asks: My goals are to regularize my sleep-wake cycle and treat some mild but persistent depression. At your suggestion,...

 I used a light box for about 10 days, and ended up experiencing anxiety and irritability, even after cutting back on the time of...

A reader asks:  I used a light box for about 10 days, and ended up experiencing anxiety and irritability, even after...

 Having been diagnosed with adult attention deficit disorder (ADD) and depression, I have been on medication for both but feel worse during the winter...

A reader asks:  Having been diagnosed with adult attention deficit disorder (ADD) and depression, I have been on medication for both...

Do you have any suggestions for someone who has suffered with summer depression for years. …

A reader asks:  Do you have any suggestions for someone who has suffered with summer depression for years. Obviously the light...

Do you agree with the opinion that SAD should be treated simultaneously by light, regularly scheduled exercise and proper diet? …

A reader asks:  Do you agree with the opinion that SAD should be treated simultaneously by light, regularly scheduled exercise and...

 I have been treated for major depression and bipolar disorder for several years, with different medications, but with no significant relief! Recently, I purchased...

A reader asks:  I have been treated for major depression and bipolar disorder for several years, with different medications, but with...

What is sundowning, and what symptoms occur with this? Is light therapy something that should be considered? The individual is suffering from depression, irritablility...

A reader asks:  What is sundowning, and what symptoms occur with this? Is light therapy something that should be considered? The...

If I am using light therapy to combat depression, and doing so resets my clock earlier …

A reader asks:  In the answer to question #1498 you wrote, "This is the time interval during which you can most...

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