A urinary tract infection (UTI) is typically caused by bacteria entering the urinary tract through the urethra and spreading to the bladder. The most common cause is the bacterium Escherichia coli (E. coli), which is commonly found in the gastrointestinal tract. Other bacteria can also be the cause, and factors such as sexual activity, urinary tract problems, and menopause can increase the risk of UTIs. In women, the proximity of the urethra to the anus makes it easier for bacteria to enter the urinary tract, which is why UTIs are more common in women