Though lifestyle factors cause blood sugar shifts, the most common cause of blood sugar issues is diabetes.
There are several types of diabetes, which are described here:
Type 1 diabetes[a child having blood glucose measured]
Type 1 diabetes may be referred to as juvenile diabetes because it usually develops during childhood.
Type 1 diabetes causes the body's immune cells to attack some of the insulin-secreting cells in the pancreas.
People with type 1 diabetes often experience very high blood sugar. Their low insulin levels, however, mean that they cannot use much of the glucose in their blood.
Type 1 diabetes is a type of autoimmune condition, which means that it causes the body to attack itself. It often develops in childhood, and is sometimes called juvenile diabetes.
Type 2 diabetes
Type 2 diabetes is the most common type of diabetes, and is linked to lifestyle issues such as being overweight.
People with type 2 diabetes have insulin resistance. This means that insulin doesn't work as well to allow the cells access to glucose.