Frequent urination can be caused by a variety of factors including medical conditions, lifestyle habits, and infections. Common reasons include an overactive bladder, urinary tract infections (UTIs), drinking too many fluids (especially diuretics like caffeine and alcohol), diabetes, enlarged prostate in men, bladder irritation, and certain medications. Other causes can be pregnancy, bladder stones, nervous system disorders, and stress or anxiety. If urination frequency disrupts daily life or comes with other symptoms like pain or urgency, consulting a healthcare provider is important to diagnose and manage the cause effectively.