This is a Kevin Trudeau claim in his "Natural Cures" books, specifically that Candida yeast is responsible for most incidents of heart disease. The remedy is something called "Candida Cleanse", which he has a financial interest in.

My mother is an M.S.N. and she told me that the only patients she’s seen with yeast infections of the heart were severely immuno-depressive, ie terminal AIDS patients or stage 4 cancer patients.