Proteins are necessary for tissue repair and for the construction of new tissue. Every cell needs protein to maintain its life. Protein is also the primary substance used to replace worn out or dead cells. Your muscles, hair, nails, skin, and eyes are made of protein.
Taking supplemental chromium has been shown repeatedly to improve insulin sensitivity and glucose tolerance, even to the point of reversing type II diabetes in many people (1). Thus, as my old clinical nutrition professor pointed out, apparently a chromium deficiency can actually lead to type II diabetes.
Insulin resistance comes in degrees, with important health implications for people with diabetes. The more insulin resistant a person with type 2 is, the harder it will be to manage the disease because more medication is needed to get enough insulin in the body to achieve target blood glucose levels.