gestational diabetes occurs during pregnancy when an individual becomes less sensitive to insulin. According to the Centers for Disease Control and Prevention (CDC), between 2–10%Trusted Source of pregnancies each year result in gestational diabetes. Individuals who are overweight going into their pregnancy have an elevated risk of developing the condition.

The CDC adds that around 50% of people with gestational diabetes will later develop type 2 diabetes.

During pregnancy, individuals can take steps to manage the condition. These include:

staying active
monitoring the growth and development of the fetus
adjusting their diet
monitoring blood sugar levels
Gestational diabetes can increase a person’s risk of developing high blood pressure during pregnancy. It can also cause:

premature birth
increased birth weight
blood sugar issues

Prediabetes, or borderline diabetes, occurs when a person’s blood sugar levels are elevated but not enough for a diagnosis of diabetes. For a doctor to diagnose prediabetes, an individual must meet the followingTrusted Source criteria:

glucose tolerance levels of 140–199 milligrams per deciliter (mg/dl)
an A1C test result of 5.7–6.4%
fasting blood sugar levels between 100–125 mg/dl
People living with prediabetes have a higher risk of developing type 2 diabetes, but they do not usually experience the symptoms of full diabetes.

Learn about naturally reversing prediabetes here.

The risk factors for a person developing prediabetes and type 2 diabetes are similar. They include:

being overweight
a family history of diabetes
having a high-density lipoprotein (HDL) cholesterol level lower than 40 mg/dl or 50 mg/dl
a history of high blood pressure
having gestational diabetes or giving birth to a child with a birth weight of more than 9 pounds
a history of polycystic ovary syndrome (PCOS)
being of African-American, Native American, Latin American, or Asian-Pacific Islander descent
being more than