Two of its members are D-mannose & D-glucose. D-mannose, or simply, mannose, shares a similar structure but a different arrangement with glucose, a phenomenon called stereoisomerism. Unlike glucose, which is absorbed eight times faster than mannose & either quickly used for energy or stored as glycogen in the liver, mannose is absorbed slowly through the upper part of the intestine, not readily converted to glycogen, & travels through the bloodstream to the kidneys virtually unchanged. From there it is carried down to the bladder & is excreted with the urine. Urinary tract infections (UTI) are caused by invading bacteria & are 10 times more common in women than in men. Escherichia coli (E. coli) is a bacteria that is part of the normal bacterial flora that populates the digestive tract. Most UTI occur when E. coli travels from the anus to the bladder & urinary tract where it doesnt belong. E. coli cells are covered with tiny hair-like fimbriae tipped with an amino-acid sugar called a lectin that allows the bacteria to attach to saccharide receptors that dot the surface of the smooth muscle walls of the bladder & ureters. Once the bacteria attach, they can multiply causing inflammation & swelling, which can lead to a urinary tract infection.