Interestingly, in old times, diabetes was diagnosed by tasting the patient’s urine for sweetness. A group of people, known as ‘water-testers’, specialized in the process. Back then, there was another simple way of diagnosing diabetes, which again was based on sweetness of the urine. The urine of a suspected diabetic was observed to check whether any ants or flies collected around it. If they did, it was believed the patient had diabetes.