19世纪末20世纪初,在欧美一些工业化较为发达的城市,那里的小孩大多出现骨骼畸形,患上了佝偻病。就伦敦而言,就有80%的小孩有不同程度的佝偻病。人们百思不得其解,究竟是什么原因导致的呢?有人说是因为饮食,如此推测当然不是空穴来风。当时有医生发现,如果给患病的孩子服用鳕鱼肝油,就能治愈佝偻病,他们认为是油脂发生了作用。还有人认为是环境恶劣造成的,因为“雾都”伦敦空气污染严重,常年见不 At the turn of the 19th and early 20th centuries, in some of the most industrialized cities in Europe and the United States, most of the children there were skeletal malformations and rickets. In London, 80% of children have varying degrees of rickets. People baffled, what is the reason? Some people say that because of diet, so speculated that of course not groundless. At the time, doctors found that rickets could be cured by taking cod liver oil to sick children who thought it was fat. Others think it is caused by bad environment, because “fog ” London air pollution is serious, perennial see no