Inheritance of Diabetes Mellitus.
—Joslin has said there are in the United States 2 million persons with diabetes mellitus. According to Martin, in Switzerland 2 persons out of every 1,000 have diabetes, in Sweden 2.4, and in Italy, claimed Travia, 2.2. According to Dublin and Marks (Diabetes1:205 [May-June] 1952), the highest mortality due to diabetes is in the United States, followed by Canada; last in the statistical scale are Austria and New Zealand. In Europe the highest mortality is in Denmark and Belgium. It was said that diabetes is caused by a decreased production of insulin by the beta cells of the pancreas or by a production that has become insufficient because of an increased demand of the organism. This increased need could be caused by a high carbohydrate diet or by a life of anxiety and emotional disturbances. It follows that a disposition to diabetes, which in