Senior author Dr. Yair Lotan said In the controlled trial women who drank an additional 1.5 liters of water daily experienced 48 percent fewer repeat bladder infections than those who drank their usual volume of fluids. The participants self-reported their usual volume as less than 1.5 liters of fluid daily which is about six 8-ounce glasses. That's a significant difference said Dr. Lotan. These findings are important because more than half of all women report having bladder infections which are one of the most common infections in women. He added that more than a quarter of women experience a secondary