If he has Type 2 diabetes, then the natural history of Type 2 diabetes is that glucose levels go up with time, as the pancreas slowly runs out of insulin. As the insulin slowly runs out, then there is less insulin to control the liver, which then makes excess glucose.There is also less insulin for the meals, so that the daytime readings go up. If he is eating appropriately and the levels are up, then the glucose is coming from the liver, and he may need his medication adjusted, as long as there is no underlying infection pushing up the glucose. Alternativley, he cuts the carbohydrates, loses weight, and increases his exercise as well as his water intake
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