Probiotics and Urinary Tract Infections

Bacteria have a reputation for causing disease, so the idea of tossing down a few billion a day for your health might seem — literally and figuratively — hard to swallow. But a growing body of scientific evidence suggests that you can treat and even prevent some illnesses with foods and supplements containing certain kinds of live bacteria. Northern Europeans consume a lot of these beneficial microorganisms, called probiotics (from pro and biota, meaning “for life”), because of their tradition of eating foods fermented with bacteria, such as yogurt.

Enthusiasm for such foods has lagged in the United States, but interest in probiotic supplements is on the rise. Since the mid-1990s, clinical studies have established that probiotic therapy can help treat and prevent vaginal and urinary infections in women.

Probiotics may also be of use in maintaining health of the urinary tract. Like the intestinal tract, the vagina is a finely balanced ecosystem. The dominant Lactobacilli strains normally make it too acidic for harmful microorganisms to survive. But the system can be thrown out of balance by a number of factors, including antibiotics, spermicides, and birth control pills. Probiotic treatment that restores the balance of microflora may be helpful for such common female urogenital problems as bacterial vaginosis, yeast infection, and urinary tract infection.

Oral administration of Lactobacilli may help in the treatment of bacterial vaginosis, although there isn’t enough evidence yet to recommend it over conventional approaches. Probiotic treatment of urinary tract infections is under study.

Health benefits are strain-specific, and not all strains are necessarily useful, so you may want to consult a practitioner familiar with probiotics to discuss your options. As always, let your primary care provider know what you’re doing.

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