The phrase
"ketone in the blood" refers to a substance called ketones that can be found in our bloodstream. Ketones are produced when the body does not have enough sugar or glucose to use for energy. This can happen when a person is not eating enough food or has a condition like diabetes. Having ketones in the blood can indicate that the body is using stored fat for energy instead of sugar. It is important to monitor the levels of ketones in the blood, as a high amount can be a sign of a serious health issue called ketoacidosis.
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