How does your body produce urine if you are not eating or drinking?

Even when not eating or drinking, your body continues to produce urine through a process called metabolic water production and the breakdown of stored nutrients. The kidneys filter blood to remove waste products and excess substances, and they can still produce urine from the fluids retained in the body. Additionally, the body can recycle water through processes like reabsorption in the kidneys, minimizing water loss despite a lack of intake. However, prolonged periods without food or water can lead to dehydration and reduced urine output.