In this case-control study of men newly diagnosed with Type 2 diabetes, the treatment group got 1 cup/day of kefir in addition to metformin, and the control group got only metformin. The average HbA1c and fasting blood sugar (FBS) decreased significantly in the kefir group.
The kefir in this study was homemade by participants, from local kefir grains from a Gaza market, with instructions supplied by the researchers.
Funding issues for this study:
"Acknowledgement: The authors thank the Research and Graduate Affairs at the Islamic University-Gaza for financial support. Financial support: The author(s) received no financial support for the research, authorship, and/or publication of this article. Conflict of Interest: The authors declare no conflict of interest."