1. **Disruption of Sleep Cycles**: High blood sugar can lead to frequent awakenings during the night, preventing deep sleep and disrupting the natural sleep cycle.

2. **Hormonal Imbalances**: Elevated glucose can affect hormones such as cortisol and insulin, which play crucial roles in regulating mood and stress levels, further complicating sleep patterns.

3. **Physical Discomfort**: Symptoms related to high blood sugar, such as increased thirst, frequent urination, and fatigue, can make it challenging to fall or stay asleep.

4. **Restless Leg Syndrome**: Some people with high blood sugar experience restless leg syndrome, which can lead to uncomfortable sensations in the legs, making it hard to relax and fall asleep.