Which hormone helps decrease urine output?

The hormone that helps decrease urine output is antidiuretic hormone (ADH), also known as vasopressin. ADH is produced in the hypothalamus and released from the posterior pituitary gland in response to signals indicating that the body needs to conserve water, such as increased plasma osmolality or decreased blood volume.

When ADH is released into the bloodstream, it targets the kidneys and enhances the reabsorption of water in the renal tubules. This process reduces the amount of water excreted as urine, thus concentrating the urine and helping maintain body hydration levels. By decreasing urine output, ADH plays a crucial role in regulating the body's fluid balance and ensuring that tissues receive adequate hydration.

This hormone's action contrasts with those of the other hormones listed. For instance, insulin primarily regulates blood glucose levels and has no direct effect on urine output. Aldosterone is involved in regulating sodium and potassium levels, which can affect fluid balance but does not directly decrease urine output in the same way as ADH. Progesterone, while it does influence various aspects of the reproductive system and can affect fluid retention, is not primarily responsible for reducing urine output. Thus, antidiuretic hormone stands out as the key hormone specifically linked to