Im with you on that ive had 3 in the last 3 months and each time ive had antibiotics for it and been told to drink loads of water to flush my system , its got to the point now where ive got to go to the clinic to get oestrogen into my system as water infections are caused by lack of oestragen apparently I drank cranberry every day and as another poster pointed out its great for clearing cystitis but not a UTI, she will damage her insides leaving it, theyre painful and make me get a temp and terrible aches in my back as well as the ususal stinging, my doctor said it can be caused by being overweight as well and in some cases a lack of personal hygiene although im the opposite on that score , too much greasy food can cause it too