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...

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...

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...

I was just wondering what your studies have shown on the application and effectiveness of broad vs. full-spectrum light box sources for bright light...

A reader asks: I was just wondering what your studies have shown on the application and effectiveness of broad vs. full-...

For a long time now I have realized that I am not able to remain active at all without natural light. As long as...

A reader asks: For a long time now I have realized that I am not able to remain active at all...

My ideal timing for light therapy, according to your Automated Morningness-Eveningness Questionnaire, is 6:45 a.m. Now, in my country, daylight starts sooner than that...

A reader asks: My ideal timing for light therapy, according to your Automated Morningness-Eveningness Questionnaire, is 6:45 a.m. Now, in my...

What does spectrum mean when talking about light therapy? Is “sunlight” a type of spectrum for the lamp or just like sunlight outdoors. Does...

A reader asks: What does spectrum mean when talking about light therapy? Is "sunlight" a type of spectrum for the lamp...

I have read that one needs expert professional supervision to synchronize the time of light exposure to your body temperature for effective light therapy....

A reader asks: I have read that one needs expert professional supervision to synchronize the time of light exposure to your...

I have been tracking my migraines for years. I have clusters that go up in the winter and down in the summer. Jan.-Feb.-Mar.-Apr. are...

A reader asks: I have been tracking my migraines for years. I have clusters that go up in the winter and...

My MEQ recommended time (Automated Morningness-Eveningness Questionnaire on www.cet.org) for light for chronic non-seasonal depression is 6:30 a.m. I attended a party and did...

A reader asks: My MEQ recommended time (Automated Morningness-Eveningness Questionnaire on www.cet.org) for light for chronic non-seasonal depression is 6:30 a.m....

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