Last year I had endless bouts of thrush and cystitus, and I mean ENDLESS .. basically I'd be crunched up over the loo on a weekly basis ... and since being diagnosed diabetic and taking to low carb route, I have not had ONE single infection (touch wood!) /// I feel that high blood sugars can give a perfect environment for both thrush and cystitus ... I'm not a doctor, just somebody who had a lot of cystitus! In reducing the BGs to almost non-diabetic numbers I've reduced my incidence by 100% ... something to think about!! all the best, hope you get some relief soon xxx