Seasonal Light Changes Linked to Depression Risk and Treatment
Seasonal Light Changes Linked to Depression Risk and Treatment
US · Published Oct 17, 2025
Seasonal Affective Disorder (SAD) is closely tied to reduced daylight hours during autumn and winter.
Light therapy, using lamps that mimic natural sunlight, is an effective intervention for restoring mood balance.
Consistent use of light therapy, especially in northern regions, helps reset circadian rhythms disrupted by shorter days.
SAD linked to reduced daylight in winter
Seasonal Affective Disorder (SAD), often referred to as seasonal depression, is significantly linked to the reduction in natural daylight during the autumn and winter months. As the days grow shorter, many individuals experience a noticeable decline in mood and energy levels. Researchers and clinicians are increasingly recommending light therapy as an effective intervention to combat SAD. Light therapy involves the use of specially designed lamps that mimic natural sunlight, helping to regulate the body’s internal clock, or circadian rhythm.
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