Kefir has many reputed health benefits. It has Antibiotic and antifungal properties. It's been used in the treatment of a variety of conditions, including metabolic disorders, atherosclerosis, and allergies, tuberculosis, cancer, poor digestion, candidiasis, osteoporosis, hypertension, HIV and heart disease. You might find it odd that that a drink containing yeasts would be good for treating candidiasis but it has been helpful to many people, both by restoring a better balance to the gut flora and because some elements of the microflora will kill off Candida Albicans. Not all yeasts are harmful.
People with Candida albicans may be concerned about the yeast's in Kefir, but research has shown that the disease is caused by an imbalance of intestinal flora and friendly bacteria. Yeast like that found in kefir, helps to rebalance the intestinal flora and fight Candida albicans.