Dim light at night leads to weight gain in female mice

Female mice exposed to dim light at night (dLAN) increased body mass despite reduced food intake.

• Dim light at night is associated with increased body mass in female mice over a six-week period.
• Mice subjected to dLAN showed a greater rate of change in body mass compared to those in a standard light/dark cycle.
• Reduced food intake was observed in female mice during the fifth and sixth weeks of exposure to dLAN.
• The findings suggest that dLAN may disrupt circadian rhythms, leading to metabolic disturbances.

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