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.
If it goes up 200 mg/dl and your sensitivity factor is 50 mg/dl per unit (you drop 50 points per unit of insulin), you would normally need to give 4 units to prevent the rise. DO THIS AND YOU MIGHT PASS OUT.