The basic Science of fungus is that fungus feeds on sugar. If your theory was true, then we could feed fat to bread yeast and make bread rise. No, fungus thrives on sugar.
As to fat, it is very important to the health of the body, but it is important to get the right kinds of fat. Go to cancertutor.com and read about the Budwig protocol. This will help your Candida and overall immune system greatly.