EUGENE, OREGON – The recent news that two-thirds of adults in the United States are overweight or obese – and the number continues to grow – brings to mind a question that has bothered me since the 1970’s: Why aren’t we all starving?
俄勒冈州尤金——不久前有关美国三分之二的成年人超重或肥胖，而且肥胖人数还在不断增加的新闻——让人们重又想起了从20世纪70年代以来就一直困扰人类的问题：我们为什么还没被饿死？