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Drinking more water reduced the frequency of recurrent UTIs

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Review of: Hooton M et al. Effect of increased daily water intake in premenopausal women with recurrent urinary tract infections: a randomized controlled trial. JAMA Internal Med 2018; 178:1509–1515.

Key points

  • This small open-label study found that increased daily fluid intake of 1.5 L in women who were low-volume drinkers reduced the number of cystitis episodes over a 12-month period.

  • Women who increased the amount of water they drank used fewer courses of antibiotics and had longer intervals to their next cystitis episode.

Increasing daily fluid intake by 1.5 L reduced the frequency of cystitis in women with recurrent urinary tract infections (UTIs) who usually drank <1.5 L per day.1


This small open-label randomised controlled trial tested the impact of increased daily water intake in reducing the frequency of recurrent cystitis in premenopausal women.1 Women with recurrent cystitis (≥3 episodes in the last year) who drank <1.5 L of fluid daily (mean intake 1.1 L per day) …

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  • Contributors DTB Team.

  • Provenance and peer review Commissioned; internally peer reviewed.