Antibiotics are a leading culprit in causing yeast problems. They work great for killing the bad stuff, BUT they also kill the good stuff, so when you come off them if the enviroment is right and the good starts coming back a little slower than say the yeast then you have a problem. When I was on Chemo a few months back and had got an infection, my doctor asked me to eat alot of yogurt while on them. I laughed and said, can I just take probiotics instead? She was so thrilled I knew what it was and said yes, even better! So even the medical field is beginning to understand sometimes the solution is something simple and healthy for you.