There are many promising studies suggesting chromium supplementation may be effective, but they are far from conclusive. For example, a small study published in the journal Diabetes Care compared the diabetes medication sulfonylurea taken with 1,000 mcg of chromium to sulfonylurea taken with a placebo. After 6 months, people who did not take chromium had a significant increase in body weight, body fat, and abdominal fat, whereas people taking the chromium had significant improvements in insulin sensitivity.
Given the prevalence of diabetes and the chronic nature of the disease, it’s no surprise that CAM is a popular treatment option. I don’t see a lot of CAM use in Type 1 diabetics. Insulin is the primary treatment, it works well, and patients can objectively measure their own blood sugar. Type 1 diabetics don’t seem to experiment with supplements that might alter their blood sugars. Those patients end up hospitalized or dead.
Note that these medications used to treat type 2 diabetes are typically not used in pregnant or breastfeeding women. At present the only recommended way of controlling diabetes in women who are pregnant or breastfeeding is by diet, exercise, and insulin therapy. You should speak with your health-care professional if you are taking these medications, are considering becoming pregnant, or if you have become pregnant while taking these medications.