Isn't that like fighting a flood with water? Not only does yeast feed yeast, but many candida sufferers actually have allergies to brewers and bakers yeast, myself included. It sounds to me like your doctor may just have stocked too much yeast in his inventory and is looking to unload it. Or maybe he just says he's a candida doctor to make you feel better about him, when he only just has read a little bit about it, but not the part about yeast feeding the inflammation or fungal problem.