I've been getting at least 4 yeast infections a year for the last 5 years.
I take acidophilus supplements.
I wear cotton undies and breathable pants or skirts.
I wipe front to back.
I do not use tampons (I use Instead).
I do not used water-based lubes containing glycerine.
I do not use any products containing nonoxynol-9 (as it will without a doubt give me a yeast infection)
My male partner(s) and I use condoms to keep basic semen out of my acidic vagina.
I will admit that my diet is not as free of refined sugar as it should be, but, I've also seen no correlation between any of the changes I've ever made to my diet and my yeast infections.
I have tested negative for HIV and diabetes.