Monday, August 3, 2020

I have at least some degree of depression on a year-round basis with a worsening in the winter months. …

A reader asks:  I have at least some degree of depression on a year-round basis with a worsening in the winter months. In the past,...

Does the changing length of day and the time of natural sunrise/sunset affect the optimum-time calculation for light therapy?

A reader asks:  Does the changing length of day and the time of natural sunrise/sunset affect the optimum-time calculation for light therapy? Answer: Only indirectly. Our internal...

I am a 22-year-old female who has had chronic fatigue syndrome (CFS) for almost two years. During that time, my sleep has been awful....

A reader asks:  I am a 22-year-old female who has had chronic fatigue syndrome (CFS) for almost two years. During that time, my sleep has...

Can light therapy alter endocrine hormone levels? There may be some evidence that TSH levels can be affected, but what about prolactin?

A reader asks:  Can light therapy alter endocrine hormone levels? There may be some evidence that TSH levels can be affected, but what about prolactin? Answer: The...

Does seasonal affective disorder subside in more temperate climates?

A reader asks: Does seasonal affective disorder subside in more temperate climates?   Answer: Although exceptions to the rule have been reported in some surveys, in general, Seasonal...

I experience advanced sleep phase syndrome (ASPS) in addition to SAD. My understanding of SAD is to treat it with morning light. My understanding...

A reader asks:  I experience advanced sleep phase syndrome (ASPS) in addition to SAD. My understanding of SAD is to treat it with morning light....

Why is it that drug therapy for SAD should not continue year-round, as you say in question #1337?

A reader asks:  Why is it that drug therapy for SAD should not continue year-round, as you say in question #1337? I have heard from...

I suffer from SAD and was wondering if UV light (from a sunbed) has any benefits?

A reader asks:  I suffer from SAD and was wondering if UV light (from a sunbed) has any benefits? Answer: As best we know, the mechanism of...

There’s no magic about the date of time change. Some people with SAD, or those with the less severe winter doldrums, begin to feel...

A reader asks:  There's no magic about the date of time change. Some people with SAD, or those with the less severe winter doldrums, begin...

Fall has arrived. I still feel OK, but I am trying to decide when to start light therapy. Should I start with the time...

A reader asks:  Fall has arrived. I still feel OK, but I am trying to decide when to start light therapy. Should I start with...

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