Do light goggles or light therapy glasses work?

A reader asks: Do light goggles or light therapy glasses work? Answer: Head-mounted light therapy devices have been around for many years, the first by the same investigators who...

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...

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...

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...

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,...