Hormone Leptin May Treat Infertility BOSTON - An appetite-curbing hormone that failed to live up to its early buzz as a possible key to slowing obesity is now being probed as a potential aid for women who suffer from infertility and eating disorders.   "This represents essentially a new era for leptin," said Dr... 

Which of the following sections of a newspaper would this article likely appear in? World News, Sports, Business, or Science and Technology? 