Kefir andYeast Infections, Anti-Candida Diets…
It seems counter-intuitive… kefir that can help control candida. Kefir is a culture that contains bacteria and yeast after all. Isn't it true that you should avoid yeast when on an anti-candida diet?
First off, there are many many different kinds of yeasts strains, just as there are many types of bacteria. While we understand that we need bacteria in our intestines for health (probiotics) we do not really understand our relationship with yeast. Probiotics, though, are not only made up of friendly bacteria, but also friendly yeast!
In fact, in one study of kefir grains, a collection of 2 milk kefir cultures and 3 water kefir cultures, a total of 34 yeast strains were isolated and identified. Many people assume that if they have a candida overgrowth, that means they have to avoid "yeast".
Here is an excerpt from that study…
Antimicrobial activity was chosen as a comparison index for native and artiﬁcial grains.
The assays were carried out introducing 0.1 mL (3 x 108 cells) of S. aureus, S. tiphymurium,
E. coli, and C. albicans in 1.5 mL of keﬁr suspensions, following incubation for 24 h at
35 °C. After this period 0.1 mL of each tube was swabbed in Petri dishes containing the
proper culture media and incubated for 24 and 48 h. By counting the colony unit formers
(CUF) for native and artiﬁcial grains, the antimicrobial activity of keﬁr exhibited a similar
pattern, with total inhibiton for all strains for both keﬁr types
and another one…
Antibiotic activity of both keﬁr and puriﬁed AK (50 mg·mL−1) has been
evaluated  using both the disk diffusion method and susceptibility tests against some well
known pathogenic bacteria (S. pyogenes, S. salivarius, S. aureus, P. aeruginosa, S. tiphymurium, E.
coli, L. monocytogenes, and C. albicans). The results of the disc diffusion promoted by keﬁran are
present at Figure 9. A rapid decrease in surviving pathogens with 0.45 mg·mL−1 of keﬁran in
the susceptibility tests was also observed, whereas the prebiotic was able to produce inhibition
haloes about 26±2 mm, greater than those found for oxacilin, ampicillin, ceftriaxone, and
azithromycin, at their usual concentrations.
In other words the milk kefir completely inhibited certain microbes that can cause infection in humans including Staphylococcus aureus and Candida albicans. Not only that, but it worked better than antibiotics! source: Kefir D’Aqua and Its Probiotic Properties