Thanks for your query. Minimum amount of Carbohydrates required during pregnancy
is 50% of total calorie intake. Ketone bodies
are not good during pregnancy. Diabetic Ketoacidosis
is one of the lethal complication of uncontrolled Diabetes
due to high ketones. So minimum carbohydrate intake is minimum of 50% diet intake.
I hope this information has been both informative and helpful for you. In case of any doubt, I will be available for follow ups.
Wish you good health.