When I was first diagnosed with Type 2 diabetes way back in 2000 I conducted my own research into Chromium.
I discovered in my research that the level of Chromium present in 85% of all newly diagnosed Type 2's was down below the average level. Chromium levels are also known to diminish with age, the older the individual is the less Chromium that they have present within their bloodstream.
The problem of low Chromium levels in the human body is more prevalent in the Western world, where advanced refining of grains and in the processing of many root vegetables lowers the intake of Chromium. This mineral is vital for the take up of glucose from within the bloodstream into the body cells and forms a part of the glucose tolerance factor.
There is much conflict as to whether taking Chromium as a supplement has any benefit, but I will say that with what I researched I've personally taken Chromium for several years now, finding that it does indeed help in stabilising my overall B/G level, and reduces my Hba1c all be it by a small amount.