Too much light sleep
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Too much light exposure during sleep can negatively impact sleep quality and metabolic health. According to , research shows that sleeping in a moderately lit environment (around 100 lux) can lead to increased nighttime heart rate and decreased heart rate variability. This indicates heightened sympathetic nervous system activity, which can disrupt glucose management and overall autonomic function, even if melatonin levels remain unchanged 1.
Key findings include:
- Increased heart rate and decreased heart rate variability when sleeping in moderately lit conditions.
- Signs of insulin resistance upon waking, suggesting impaired glucose management.
- Importance of a dark sleeping environment to maintain optimal metabolic health.
This highlights the critical role light plays in influencing sleep and metabolic processes 1.
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