Clinically, there are three main types of diabetes: type 1, type 2, and gestational diabetes (diabetes while pregnant). The major incidence populations of type 1 diabetes are adolescents and children, it is recognized by the destruction of pancreatic β-cells which leads to insufficient insulin secretion and hyperglycemia. Type 2 diabetes is caused by genetic, and environmental factors and their interactions. Usually, it is characterized by malfunction of pancreatic β-cell and insulin resistance in cells. Gestational diabetes develops in pregnant women who have never had diabetes before. If you have gestational diabetes, your baby could be at higher risk for health problems. Your baby is more likely to have obesity as a child or teen, and more likely to develop type 2 diabetes later in life too.