I work in rotating shifts: two days of 7 AM – 3 PM, then

A reader asks: I work in rotating shifts: two days of 7 AM - 3 PM, then two days of 3 PM - 11 PM,...

I get the impression from everything I have read that exposure to light at the time of waking

A reader asks: I get the impression from everything I have read that exposure to light at the time of waking is important for fighting...

My 24-year-old daughter had a kidney transplant three years ago

A reader asks: My 24-year-old daughter had a kidney transplant three years ago and will always be on anti-rejection meds. She cannot be in the...

 I’ve noticed that light therapy boxes (LTB’s) have uses for SAD, but I have heard that they can be effective with insomnia.

A reader asks:  I've noticed that light therapy boxes (LTB's) have uses for SAD, but I have heard that they can be effective with insomnia....

How long should you be treated with an artificial sunlight bulb?

A reader asks: How long should you be treated with an artificial sunlight bulb? Answer: We do not recommend treatment with "bulbs" per se, but rather with...

Will longer exposure to a dimmer light box (say, 7500 lux) accomplish the same effect as 30 minutes at 10,000 lux?

A reader asks: Will longer exposure to a dimmer light box (say, 7500 lux) accomplish the same effect as 30 minutes at 10,000 lux? Answer: The answer...

What is the likelihood that individuals with light sensitivity (photophobia) can also have SAD? …

A reader asks: What is the likelihood that individuals with light sensitivity (photophobia) can also have SAD? The fall/winter months have been consistently difficult for...

Light therapy so far seems helpful for my depression, but I’ve noticed that it makes me feel anxious and wound up. Should I adjust...

A reader asks: Light therapy so far seems helpful for my depression, but I've noticed that it makes me feel anxious and wound up. Should...

I am looking into light therapy, not so much because the days are short, but because I work in a place with no windows....

A reader asks: I am looking into light therapy, not so much because the days are short, but because I work in a place with...

Do you have any info on the small, hand-held lighting devices that have recently been marketed? How do they compare with the 10,000 lux...

A reader asks: Do you have any info on the small, hand-held lighting devices that have recently been marketed? How do they compare with the...