Why does the following scenario happen? My last meal or snack is about 9:30 p.m. I check my blood sugar level just before bed (11 p.m.) and it is in the high 90s. When I wake up in the morning, I check my sugar again and find that my number is now 130 or higher. This has happened many times and I can't seem to find an answer. On most occasions, the morning number is in the 50s.

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