We are all familiar with diabetes and know that it is an “undead cancer” that cannot be cured and is not life-threatening. But today we’re talking about gestational diabetes, which is something that not many people know about. This gestational diabetes, that is, the first time a pregnant woman has high blood sugar levels during pregnancy, generally maternal blood sugar will drop to normal after the birth of the baby, this is a characteristic of gestational diabetes, that is, only during pregnancy appears high blood sugar, after the delivery will return to normal. We not only ask, does this gestational diabetes have an effect on the pregnant woman and the fetus? The answer is of course yes, and the effect is also very big, high blood sugar during pregnancy may lead to spontaneous abortion, huge fetus, fetal malformation, delivery difficulties, neonatal whistling distress syndrome and a series of other problems, endangering the mother and fetus. Therefore, this gestational diabetes needs to be strictly controlled. So should insulin be used for gestational diabetes? Whether insulin should be used or not depends on the circumstances. When gestational diabetes occurs, the first thing to consider is not the use of insulin, but rather diet and exercise to control blood sugar. Diet includes limiting daily energy intake, eating fewer and more frequent meals, and balanced nutrition, while appropriate physical activity can also effectively help lower blood sugar, improve insulin resistance during pregnancy, and exert a glucose-lowering effect. However, if gestational diabetes patients cannot effectively control their blood glucose through diet and exercise therapy, then direct insulin injections are required. It may be at this time that some people wonder why insulin must be used and not oral hypoglycemic drugs. This is because oral hypoglycemic drugs can pass through the placenta and affect the fetus, possibly leading to fetal malformations. Therefore, the only hypoglycemic drug to control high blood sugar during pregnancy is insulin.