The overall principle of dietary control for gestational diabetes is to manage the total calorie intake by eating smaller, more frequent meals, dividing the day into five to six meals. This helps not only in controlling blood sugar levels but also reduces the occurrence of hypoglycemia. For patients with gestational diabetes, foods that quickly raise blood sugar, as well as those high in sugar content, starch, and fat, should be limited as these can easily convert into glucose, leading to an increased blood sugar level. Sweet potatoes, which are available in many varieties on the market, some with higher sugar content and some with lower, should be considered accordingly. Those with higher sugar content should ideally be avoided to prevent excessively high blood sugar levels, while those with lower sugar content can still be consumed. However, when eating sweet potatoes, they should be treated as a staple food, and the amount of other staple foods should be reduced accordingly to maintain good control of blood sugar levels.