Diabetes is common in Canada, yet few of us know much about it. This chronic disease robs the body of its ability to control blood sugar (glucose) levels, either because it cannot produce insulin or cannot properly use the insulin it produces. Without insulin, sugar builds up in the blood instead of being used as energy. Over time, this damages organs, blood vessels and nerves. A report by Diabetes Canada in 2015 found the number of people with diabetes more than doubled between 2000 and 2015…