Type 1 diabetes
Type 1 diabetes, also called diabetes mellitus type 1, is an autoimmune disease that results in high blood sugar. This is because the body cannot create enough of the hormone insulin. People with type 1 diabetes need to take insulin injections to stay healthy. If they do not get enough insulin, they can become very sick or even die. People with type 1 diabetes are at increased risk of of diseases involing blood vessels such as stroke, heart disease or gangrene. About 15% of people with diabetes have type 1.