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Survey study, 2007

Does light therapy for seasonal depression affect when menstruation starts?

Menstruation started on average 1.2 days earlier after light therapy for seasonal depression. This was noted as a minor side effect in only 2 people.

Early or limited evidence 38 people with seasonal affective disorder (winter depression)

What they did

Researchers tracked when menstruation started in 38 people with seasonal depression before and after they received light therapy.

What they found

Following light therapy, menstruation started on average 1.2 days earlier. In 2 people this was noted as a minor side effect. There was no link between how much menstruation shifted and how much depression improved.

What it means for you

Light therapy may affect when menstruation starts through effects on the brain's hormone control system. However, this is a small study and a 1.2 day shift may not be practically important.

38

people with seasonal depression studied

1.2

days earlier menstruation started on average

2

people noted it as a minor side effect

About the study

Original title
Shortening of the menstrual cycle following light therapy in seasonal affective disorder
Authors
Danilenko KV
Journal
Psychiatry research
Year
2007
Study design
Survey study
What was tested
Light therapy for seasonal depression

Topics