Bedwetting in adults may be due to pregnancy, prostate enlargement, prostate cancer and other factors. 1. Pregnancy. Usually, when a woman is pregnant, her uterus will increase in size, which will put pressure on her bladder. Secondly, after pregnancy, the hormone levels in the body will also change. This can lead to stress incontinence and therefore bedwetting during sleep. Generally after delivery, the pressure and hormone levels will return to normal, and the symptoms of bedwetting will improve. 2. Prostatic hyperplasia. Prostatic hyperplasia is usually caused by the action of androgens and their receptors, imbalance of cell proliferation and apoptosis, and so on. It usually increases the amount of residual urine, and the hyperplastic gland also presses the urethra, so the symptom of bedwetting occurs at night when you sleep. 3. Prostate cancer. It is a malignant tumor that occurs in the epithelial cells of the prostate gland mainly due to age, race, heredity, food and other factors. It usually causes pressure on the urethra, which leads to an increase in the amount of residual urine in the bladder and bedwetting at night. Usually, after the occurrence of bedwetting in adults, it is recommended to consult a doctor in time, and treat the cause of the disease after clarifying the cause under the guidance of the doctor.