My understanding is that yeast (esp. candida) lives in digestive systems of most people. I was recently introduced to the concept of "candida overgrowth". My pseudoscience detector quickly alerted me about the concept (see also http://en.wikipedia.org/wiki/Candidiasis#Society_and_culture as suggested by @GlenTheUdderboat), and it is not my area of expertise nor have I dug into the topic, but I heard that reducing sugar intake is recommended for controlling candida in the (human) digestive system (e.g., see diet section in http://www.nationalcandidacenter.com/candida-causes/ and http://www.thecandidadiet.com/why-does-candida-need-sugar/).
My question: is there scientific evidence for and/or against sugar intake correlating/causing candida growth in human/animal digestive systems?