The prevention or inhibition of formation of ketone bodies. In starvation, diabetes, and certain other conditions, production of ketones is increased, but they accumulate in the blood because cells do not use them as rapidly as they would carbohydrate energy sources. Increased carbohydrate intake will help to prevent or treat this. Carbohydrates are therefore antiketogenic. In ketonemia due to diabetes, both insulin and carbohydrates are needed to allow carbohydrate metabolism to proceed at a rate that would control ketone formation.