许多国家的学者,经长期的观察和研究,一致认为第二次世界大战以来,糖尿病的发病率日益增高。如美国,1950年糖尿病人约120万人,而1975年即增至500万人,每年约30万人死于糖尿病;在致死原因的统计中,锫尿病已跃居第三位。在美国、英国等国家,糖尿病是致盲的首要病因。我国许多地区近年 Many long-time observers and scholars in many countries agreed that the incidence of diabetes has been on the rise since the Second World War. For example, in the United States, there were about 1.2 million diabetics in 1950 and 500 million in 1975, with an estimated 300,000 people dying of diabetes each year. In the statistics of the cause of death, diabetics ranked third. In the United States, Britain and other countries, diabetes is the primary cause of blindness. In many areas of our country in recent years