Diabetes, as you know is a complex situation in which the body has reduced ability to remove sugar from the blood into cells. Most of the sugar is removed with the help of insulin, a hormone secreted by the pancreas in response to the body's blood sugar level.
Diabetic control is multi factorial, a combination of food and exercise, stress management and newer research showing how gut microbiome (gut bacteria) influences diabetic control (Dore, 2013). There are a number roles gut microbe plays are role and is dependent on the type of microbiome present:
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Potgieter, M. B. J. K. D. P. E., 2015. The dormant blood microbiome in chronic, inflammatory diseases. FEMS Microbiology Reviews, 39(13), pp. 567-591.
Turnbaugh, P. e. a., 2007. The human microbiome project: exploring the microbial part of ourselves in a changing world. Nature, 449(7164), pp. 804-810.
Vitatta, L. A. H., 2013. The pharmacrobitoic potential of the gastrointestinal tract micro -biometabolome-probiotic connect: A brief commentary.. Drug Development Research , Volume 74, pp. 353-359.