Women who have never been diabetic in all their lives may have high blood sugar levels during pregnancy and this condition in termed as gestational diabetes. As per the reports of the Centers for Disease Control and Prevention, the percentage of gestational diabetes was as high as 9.2 in 2014. Though there is no strict guideline about what causes gestational diabetes,certain clues can explain it. The work of the placenta is to support the baby while it is growing in the mother's womb. But these hormones sometimes block the function of insulin in the pregnant woman's body and this condition is called insulin resistance. Insulin resistance makes it difficult for the mother's body to use insulin while she may require up to 3 times as more insulin.Diabetes in pregnancybegins when the mother's body is not able to produce and use the required amount of insulin to support the pregnancy. Without a proper supply of insulin, the glucose gets accumulated in the. Therefore, it is important to seek the advice of a gynecologist and avail the propergestational diabetes management treatment. Gestational diabetes can affect a woman in her late pregnancy after the body of the baby has been formed and is growing at a rapid pace. So, availing treatment is crucial and as a result of the treatment pregnancy complications can be prevented.