Excretion, an important function of the body wherein the toxins and other waste
                                products are filtered from the blood and expelled out, is performed by the urinary
                                tract. The organs constituting the tract include kidneys, bladder, ureters and urethra
                                and thus, any infection affecting these structures is known as urinary tract infection or UTI.
                                When bacteria such as E.coli, 
Chlamydia etc attack and grow in the tract, UTI ensues.
                                Though mostly 
women tend to have UTI, men with diabetes, kidney stones, enlarged prostate,
                                poor hygiene, urinary blockage, use of spermicidal creams, history of any urinary tract
                                procedure are more prone to develop this infection.