Perhaps yes. I am not sure what coffee does, but it certainly (directly/indirectly) causes the yeast to grow. Somewhere I read that it can wipe out good bacteria....Coffee without milk/cream/sugar - just straight coffee is enough to cause a relapse in me.

Perhaps blood sugar levels rise in response to the adrenal stimulation? I am uncertain what exacty it is about coffee, but there it is. I'm ok with black tea though - in fact Andy Cutler recommends strong black tea for those with candida. He feels it helps... Not sure how accurate that is. Herbal tea seems to be the safest (at least for me).