Keto Pro - Keto Pro In a study by the United States Department of Agriculture, 180 diabetic patients received 1,000 micrograms of chromium daily. After four months, the patients showed significant improvements in blood sugar and insulin levels. Another study by the USDA showed that overweight women who took 200 micrograms of niacin-bound chromium over a two-month period, combined with moderate exercise and reduced calories, resulted in significant weight loss.