Individuals who suffer from type 1 diabetes will also experience metabolic changes. Without insulin to usher sugar into the cells, the body begins to burn fat or lean muscle mass for energy. This can result in a condition called ketoacidosis because ketones are the byproduct of fat burning and protein burning in the body. Excess glucose that is not bound to other proteins will be excreted by the kidneys. As the body continues to burn fat and lean muscle mass for energy, the individual will experience a significant weight loss. While some may find this a method of weight loss easy, it does cause significant damage to the body's organs, including the eyes and the kidneys, which can lead to blindness and the loss of kidney function.