Thursday, September 24, 2020

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 of summer. I feel...

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 to 6 winters, was...

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 the backs of the...

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 to 45 minutes, to...

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 or clinical depression. Is...

What kind of light therapy would be most appropriate for a person at risk for macular degeneration? I have been seeing advertisements for green...

A reader asks: What kind of light therapy would be most appropriate for a person at risk for macular degeneration? I have been seeing advertisements...

What is the difference between color temperature and the color rendering index (CRI)? Which is more important for light therapy?

A reader asks: What is the difference between color temperature and the color rendering index (CRI)? Which is more important for light therapy? Answer: Color temperature reflects...

I have a number of related questions. 1. This is my first year using a light box. How do I know when to stop?...

A reader asks: I have a number of related questions. 1. This is my first year using a light box. How do I know when...

I am 50 years old and have struggled with insomnia for decades. I can even remember not being able to fall asleep as early...

A reader asks: I am 50 years old and have struggled with insomnia for decades. I can even remember not being able to fall asleep...

Have any studies been conducted in a clinical setting on the possibility of adverse effects on the retina with any light source of 10,000...

A reader asks: Have any studies been conducted in a clinical setting on the possibility of adverse effects on the retina with any light source...

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