About This Statistic
This statistic depicts the countries with the highest prevalence of diabetes worldwide in 2015. The Cook Islands was the country with the fourth highest prevalence of diabetes, with some 21.5 percent of its population aged between 20 and 79 suffering from the disease. In that same year, approximately 12.8 percent of adults in the United States had diabetes, while only 7.6 percent of those in Japan had the disease. If left untreated diabetes can cause heart disease and stroke and can damage a persons eyes, kidneys and nerves.