What causes decreased urine output in the elderly?

Decreased urine output in elderly individuals can be caused by several factors, often related to changes in kidney function and fluid balance. As people age, the kidneys might not work as well in filtering waste from the blood, a condition called chronic or acute renal failure. This can result in less urine being produced.

Another reason for decreased urine output is dehydration. Elderly people may not feel thirsty as often, which can cause them to drink less water. Without enough fluids, the body produces less urine to conserve water.

Additionally, aging can affect how the body manages fluid balance. This means that the body might hold onto fluids in different ways, leading to less urine output. These changes can be complex and may require medical attention to address underlying causes and ensure proper hydration and kidney function.