Diabetes is when your blood glucose, or blood sugar, is too high. It is caused by a defect in the way your body makes or uses insulin.
Type 1 diabetes means your body doesn’t make its own insulin. This type is diagnosed most often in children and teens. The most common type of diabetes diagnosed in adults — Type 2 — is when your body doesn’t use insulin well. Symptoms usually include extreme thirst or hunger, losing weight without trying, going to the bathroom a lot, blurred vision and being very tired throughout the day. Gestational diabetes can occur when you are pregnant and usually goes away after the baby is born.
Diabetes is a serious medical condition. Left untreated, it can lead to: