Type 1 diabetes
Type 1 diabetes is a condition caused by a lack of insulin in the body. Insulin is a hormone produced by cells in the pancreas. Insulin is responsible for moving sugars out of the blood and into cells to be used by the body for energy. If insulin is not made, the body will search for other ways to get the sugars needed to feed the body's cells, including breaking down muscle and fat, leading to a loss of weight.