If gestational diabetes is managed well and blood sugars are kept under control, no harm should come to you or your baby. Because gestational diabetes usually occurs in late pregnancy, the baby's development is not affected. However, untreated or poorly controlled gestational diabetes can cause the following complications:

Macrosomia. Gestational diabetes can result in a larger than normal baby. The baby receives all of its food and nutrients from the mother's blood. If the mother's blood has too much glucose, the baby's pancreas will sense this and produce extra insulin in an attempt to get rid of the extra glucose. Because the baby is getting more energy than it needs, the extra energy is stored as fat.

Delivery problems. Babies with macrosomia can incur damage to the bones and nerves of their arms and shoulders during delivery. Sometimes a caesarian section may be necessary to deliver the baby if it is too large.

Low blood sugar levels. Gestational diabetes can increase the newborn’s risk of developing low blood glucose levels. After the birth, the baby continues to produce a high level of insulin, but without receiving the high levels of glucose from its mother, thereby causing blood sugar levels to drop. The baby's blood sugar levels should be checked shortly after birth and rectified intravenously if necessary.

Obesity and Type 2 diabetes. Babies with excess insulin become children who are at risk for obesity and adults who are at risk for Type 2 diabetes, both of which lead to other serious health problems. 

Jaundice. Untreated gestational diabetes can also result in jaundice for the newborn. Jaundice is a build-up of old red blood cells that the body can’t process fast enough. This problem goes away with treatment.

The most important goal in treating gestational diabetes is to control blood glucose levels. This can usually be achieved effectively through:

• Special meal plans
• Regular exercise
• Regular blood glucose testing

A doctor or dietitian can recommend a specialized meal plan that takes into account your weight, stage of pregnancy, food preferences, level of exercise, and any other relevant factors. You should also ask your doctor to help you design a balanced exercise program. The more regularly you exercise, the better your control of blood glucose levels should be. Be careful when you exercise though; make sure that your pulse is not too high and the exercise not too strenuous. If you experience any unusual pain during exercise you should call your doctor immediately.

You can use a food and exercise diary to log your foods and activities. Try Allan Borushek's Pocket Food and Exercise Diary or an electronic diary, such as the CalorieKing Food and Exercise Diary (available at www.CalorieKing.com, or via software for Windows, Mac or Palm OS.) If exercise and diet are not effective in stabilizing blood glucose levels, you may require insulin injections. Your doctor will advise you on this.

Blood glucose testing is important to see how well you are controlling your levels. Testing can be done at the doctor’s office or at home. Your doctor or diabetes educator may be able to provide you with a user-friendly blood glucose monitoring machine and teach you how to read your blood glucose and food intake profiles. You can record and monitor your results using the CalorieKing Diabetes Log.

Gestational diabetes usually goes away after pregnancy. However, if you have had gestational diabetes, you face a 40 percent chance of developing Type 2 diabetes within 5-10 years after delivery. You also have a 50 percent chance of gestational diabetes occurring in a future pregnancy. These risks are increased if you are overweight. To help lower the risk of future diabetes, take steps to maintain a healthy lifestyle.

• Maintain a healthy weight and aim to minimize extra fat – especially around the waist.
• Make wise food choices.
• Exercise regularly and with variety.
• Before considering another pregnancy, get your doctor or diabetes educator to monitor your blood sugar levels.