I’m using a light box (10,000 lux) for 30 minutes at 7:30 each morning for depression and to help me get up at a...

A reader asks:  I'm using a light box (10,000 lux) for 30 minutes at 7:30 each morning for depression and to...

I have recurrent ocular herpes for which I take Valtrex every day. Are there any concerns that light box therapy can exacerbate it?

A reader asks: I have recurrent ocular herpes for which I take Valtrex every day. Are there any concerns that light...

There is one brand of light box out there that combines light and ions. Would that be overkill? Could one somehow get “too much...

A reader asks: There is one brand of light box out there that combines light and ions. Would that be overkill?...

In answer to another person’s question, you said, “Waking up to bright morning light, whether from outdoors or timed artificial light sources, is far...

A reader asks: In answer to another person's question, you said, "Waking up to bright morning light, whether from outdoors or...

Do most people respond to light therapy even at the “right time” for phase advances or delays? Does it need to be done at...

A reader asks:  Do most people respond to light therapy even at the "right time" for phase advances or delays? Does...

How do the lights work?

A reader asks: How do the lights work?Answer: Scientists are still investigating the precise mechanism that makes light therapy effective. Thus far,...

I suffer from panic disorder. I used a light box for four days for 30 minutes starting at 6:30 a.m. On the fourth day...

A reader asks: I suffer from panic disorder. I used a light box for four days for 30 minutes starting at...

I used to be a night owl only — I could not fall asleep until 1-2 a.m. and then always had trouble getting up...

A reader asks: I used to be a night owl only -- I could not fall asleep until 1-2 a.m. and...

Why am I so tired in the morning during the winter months?

A reader asks: Why am I so tired in the morning during the winter months?Answer: Our internal biological clock--which strongly influences our...

I have suffered from delayed sleep phase syndrome since I was a little girl. I am now 46 and suddenly too old to live...

A reader asks:  I have suffered from delayed sleep phase syndrome since I was a little girl. I am now 46...

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