Good blood glucose control reduces the risks of complications developing for the mother and baby. The target HbA1c for mothers before and during pregnancy is 6.1% (or 43 mmol/mol). People with diabetes before their pregnancy will be advised to keep excellent control of their blood sugar before and throughout the pregnancy.
The first eight weeks of the pregnancy are a critical period and so it is highly recommended that strong control is achieved prior to becoming pregnant wherever possible. Mothers who develop gestational diabetes will be treated initially with diet and exercise but may be put onto oral hypoglycaemics (tablets) or insulin injections if blood sugar levels remain high.