Which statement best describes the Dawn phenomenon?

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Multiple Choice

Which statement best describes the Dawn phenomenon?

The Dawn phenomenon is the rise in fasting blood glucose in the early morning caused by the body's circadian surge of counterregulatory hormones (like growth hormone and cortisol) that increase hepatic glucose production and reduce insulin sensitivity overnight. This results in higher glucose levels when you wake up, reflecting nocturnal insulin resistance. The statement described here fits best because it captures that overnight desensitization to insulin leads to morning hyperglycemia. The other options describe different situations: nocturnal hypoglycemia with rebound hyperglycemia (Somogyi effect) or a general night-long rise that isn’t the typical pattern, and treatment advice rather than the phenomenon itself.

The Dawn phenomenon is the rise in fasting blood glucose in the early morning caused by the body's circadian surge of counterregulatory hormones (like growth hormone and cortisol) that increase hepatic glucose production and reduce insulin sensitivity overnight. This results in higher glucose levels when you wake up, reflecting nocturnal insulin resistance.

The statement described here fits best because it captures that overnight desensitization to insulin leads to morning hyperglycemia. The other options describe different situations: nocturnal hypoglycemia with rebound hyperglycemia (Somogyi effect) or a general night-long rise that isn’t the typical pattern, and treatment advice rather than the phenomenon itself.

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