PATHOLOGY

Detailed explanation-1: -Antidiuretic hormone (ADH) is a chemical produced in the brain that causes the kidneys to release less water, decreasing the amount of urine produced. A high ADH level causes the body to produce less urine.

Detailed explanation-2: -There are two major stimuli for ADH release: elevated plasma osmolality and decreased effective circulating volume. Increased plasma osmolality causes shrinkage of a specialized group of cells in the hypothalamus called osmoreceptors.

Detailed explanation-3: -Low levels of ADH may mean you have diabetes insipidus or damage to the pituitary gland. Or you may have primary polydipsia. This is extreme thirst because of hypothalamus problems or mental illness.