of fluids before bedtime
Consuming caffeine or alcohol in the evening
Eating foods with high water content late at night
Certain medications, especially diuretics
Sleep disorders such as sleep apnea
The role of antidiuretic hormone (ADH)
A key factor in nighttime urination is antidiuretic hormone (ADH). This hormone helps the kidneys reduce urine production during sleep. As people age, ADH production often decreases, leading to increased urine output at night.
This natural hormonal change explains why nocturia becomes more common with advancing age.
Normal Nighttime Urination Frequency by Age
Medical
