Diabetes is a disease in which the body can not produce or properly use insulin. Insulin is a hormone the body uses to convert starch, sugar and other foodstuffs should be energy for your body to function properly. Four main types of diabetes are type 1 diabetes, type 2 diabetes, gestational diabetes and pre-diabetes.World large, diabetes affects a huge number of people. United States alone, over 6% of the population - about 18 million people - have diabetes. Although the exact causes are still a mystery, researchers have discovered a number of symptoms. These symptoms include extreme thirst and hunger, frequent urination, blurred vision, weight loss, fatigue, and irritability.Pregnant women become diabetic during pregnancy is called gestational diabetes. This form of the disease affects about 4% of all pregnant women in the United States.Women who become diabetic during pregnancy are likely to be a family history of diabetes. Obesity, in turn, may be a factor.