What is ADH and where it produced?

Antidiuretic hormone (ADH), also known as vasopressin, is a hormone that regulates water homeostasis in the body. It is produced by the hypothalamus, which is a small region located at the base of the brain, and stored in the posterior pituitary gland. When the body needs to conserve water, the hypothalamus releases ADH, which then travels to the kidneys through the bloodstream. In the kidneys, ADH acts on the collecting ducts, increasing their water permeability, which allows more water to be reabsorbed from the urine back into the bloodstream. This process results in the production of more concentrated urine and less urine output, helping maintain the body's water balance.