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...

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...

My husband and I practice natural family planning using the sympto-thermal method. Charting my waking temperature at the same time each day is important...

A reader asks:  My husband and I practice natural family planning using the sympto-thermal method. Charting my waking temperature at the...

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...

 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...

I bought CET’s recommended light box in early November and can’t even begin to describe what a wonderful addition to my life it has...

A reader asks: I bought CET's recommended light box in early November and can't even begin to describe what a wonderful...

 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...

 I have recently been diagnosed with SAD and am about to purchase a light box. Both Medicaid and Medicare have refused to contribute toward...

A reader asks:  I have recently been diagnosed with SAD and am about to purchase a light box. Both Medicaid and...

Where in my area can I find help planning the schedule I need to treat delayed sleep phase syndrome once I get the lamps?...

A reader asks: Where in my area can I find help planning the schedule I need to treat delayed sleep phase...

I have been tracking my migraines for years. I have clusters that go up in the winter and down in the summer. Jan.-Feb.-Mar.-Apr. are...

A reader asks: I have been tracking my migraines for years. I have clusters that go up in the winter and...

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