A previously healthy but overweight adult comes to the doctor for an examination. The doctor then orders a fasting blood sugar (FBS) to test for what?

A fasting blood sugar measures the amount of glucose in the blood after the person has not eaten for several hours. It is commonly used to screen for diabetes, and being overweight increases the risk of type 2 diabetes. Therefore, the correct choice is type 2 diabetes; thyroid disorders are assessed with different tests.

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