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...

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...

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...

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...

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...

I seem to have reverse SAD–every year I get depressed in April and it gets worse until end of summer. I feel my best...

A reader asks: I seem to have reverse SAD--every year I get depressed in April and it gets worse until end...

Is light therapy safe for the eyes?

A reader asks:  Is light therapy safe for the eyes?Answer: The largest study, for 10,000 lux, 30 min daily exposures for up...

I am so grateful for the study that came out in 1998 showing that light therapy works on the backs of the knees as...

A reader asks: I am so grateful for the study that came out in 1998 showing that light therapy works on...

About five days ago, I increased the amount of time in front of my light box from 30 to 45 minutes, to try to...

A reader asks: About five days ago, I increased the amount of time in front of my light box from 30...

From what I gather, UV light is not a necessary component to help combat the symptoms of SAD or clinical depression. Is this correct?

A reader asks:  From what I gather, UV light is not a necessary component to help combat the symptoms of SAD...

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