Insulin is a naturally occurring hormone made by the pancreas that helps our body use or store the glucose (sugar) it gets from food. For people with diabetes, either the pancreas does not make enough insulin to meet the body's requirements, or the body cannot properly use the insulin that is made.
The yellow color in normal urine comes from a substance known as urochrome. Urochrome is also known as urobilin and is the result of hemoglobin breakdown. Hemoglobin is the protein in red blood cells that enables oxygen to be taken around the body.
The yellow comes from urochrome, a substance generated by the breakdown of hemoglobin, the oxygen-carrying protein in red blood cells. A surprising number of things can affect the color and odor of your urine. The most common ones are harmless and temporary, including foods, vitamins, and certain medications.