Understanding the biological components of adult bedwetting is essential. In this article, I discuss the roles of bladder capacity and hormone levels.
The Role of Antidiuretic Hormone (ADH)
Normally, the brain secretes higher levels of ADH at night, instructing the kidneys to produce less, more concentrated urine. A deficiency in this nocturnal rise causes the kidneys to produce excess urine during sleep, overloading the bladder.
Bladder Storage Limitations
If functional bladder capacity is decreased, or if the detrusor muscle contracts involuntarily during sleep, even normal amounts of urine can cause bedwetting.