Will the fetus have diabetes if the mother has gestational diabetes?

Written by Zhang Lu
Obstetrics
Updated on October 19, 2024
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Gestational diabetes is a common complication during pregnancy, characterized by elevated levels during glucose tolerance tests conducted while a woman is pregnant. Gestational diabetes can significantly affect both the mother and fetus, but actively controlling blood sugar can generally minimize these impacts.

If a baby is born to a mother with gestational diabetes, this baby has a higher likelihood of developing diabetes later in life compared to the general population, but it does not necessarily mean that they will. This is because such babies have a genetic predisposition and might experience insufficient pancreatic function as adults, which can lead to diabetes.

Therefore, it is important for these newborns to undergo regular blood sugar monitoring as adults to determine if they have diabetes, and if so, to seek proactive treatment.

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Causes of Gestational Diabetes

Gestational diabetes refers to the abnormality of blood sugar levels that occurs during pregnancy, at which time it is called gestational diabetes. The reason for the occurrence of gestational diabetes is due to significant changes in the body's endocrine hormones after pregnancy. The body releases many hormones, such as estrogen and progesterone, which can increase insulin resistance. Thus, a much greater amount of insulin is needed to maintain normal blood sugar levels. If the pancreatic beta cells are not sufficient to compensate for the increased insulin secretion needed to meet the normal metabolic requirements caused by these resistance factors, then elevated blood sugar and abnormal glucose metabolism occur, ultimately leading to gestational diabetes.

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Written by Luo Juan
Endocrinology
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What is gestational diabetes?

Gestational diabetes, also known as pregnancy-induced diabetes, generally refers to a condition diagnosed during pregnancy where varying degrees of high blood sugar levels are detected for the first time. This includes some cases where glucose intolerance or diabetes was undiagnosed before the pregnancy. Most patients see their blood sugar levels return to normal after delivery, but regardless of whether the high blood sugar normalizes post-pregnancy, it is considered gestational diabetes. Currently, the diagnostic criteria for gestational diabetes include a 75-gram oral glucose tolerance test. If the fasting blood glucose level is greater than or equal to 5.1 mmol/L, the blood glucose level after one hour is greater than or equal to 10.0 mmol/L, and the blood glucose level after 120 minutes is greater than or equal to 8.5 mmol/L, then gestational diabetes can be diagnosed.

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Written by Zhang Lu
Obstetrics
52sec home-news-image

Will the fetus have diabetes if the mother has gestational diabetes?

Gestational diabetes is a common complication during pregnancy, characterized by elevated levels during glucose tolerance tests conducted while a woman is pregnant. Gestational diabetes can significantly affect both the mother and fetus, but actively controlling blood sugar can generally minimize these impacts. If a baby is born to a mother with gestational diabetes, this baby has a higher likelihood of developing diabetes later in life compared to the general population, but it does not necessarily mean that they will. This is because such babies have a genetic predisposition and might experience insufficient pancreatic function as adults, which can lead to diabetes. Therefore, it is important for these newborns to undergo regular blood sugar monitoring as adults to determine if they have diabetes, and if so, to seek proactive treatment.

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Written by Gan Jun
Endocrinology
59sec home-news-image

How to determine if you have diabetes

If a patient experiences significant symptoms of dry mouth, excessive thirst, increased urination with more foamy urine, increased appetite, but an unexplained weight loss, known as the "three polys and one low" symptoms, it is necessary to monitor fasting blood glucose. If the fasting blood glucose exceeds 7.0 mmol/L or the blood glucose two hours after a meal exceeds 11.1 mmol/L, or if there are no clear "three polys and one low" symptoms but random blood glucose levels exceed 11.1 mmol/L on two occasions, a diagnosis of diabetes can be confirmed. At the same time, it is essential to rule out secondary effects on blood sugar levels caused by infections, trauma, or the use of steroid medications. It is also recommended that the patient undergo tests for glycated hemoglobin, as well as insulin and C-peptide release tests, to further clarify the diagnosis.

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Obstetrics
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Symptoms of Gestational Diabetes

The symptoms of gestational diabetes differ from those of non-pregnancy diabetes; non-pregnancy diabetes is mainly characterized by excessive drinking, eating, urination, and weight loss. During pregnancy, excessive drinking and eating may be physiological responses due to increased appetite, and frequent urination may be caused by the enlarged uterus pressing on the bladder during early pregnancy. Weight loss is generally not apparent in gestational diabetes due to the growth of the fetus, the uterus, and the increase in amniotic fluid. For women who had a higher body mass index before pregnancy and a family history of diabetes, it is recommended to start glucose tolerance screening from the time of planning to conceive. For those who gain weight rapidly after becoming pregnant and have a significant increase in amniotic fluid, we typically conduct routine diabetes screening between 24 to 28 weeks of pregnancy. Gestational diabetes has severe impacts on the pregnant woman, the fetus, and the newborn, thus early detection and treatment are advised.