Daylight saving time ends, worsening seasonal affective disorder for some Americans due to less sunlight.

As daylight saving time ends on November 2, 2025, health experts warn the time change may worsen seasonal affective disorder (SAD), affecting about 5% of Americans. Reduced sunlight disrupts circadian rhythms, leading to symptoms like low energy, oversleeping, and increased appetite. While many experience mild winter blues, SAD can severely impact daily life. Scientists link the condition to biological shifts in hormones, sleep, and gene expression. Light therapy, consistent sleep, and outdoor exposure are recommended treatments.