keywords: leptin hormone infertility obesity appetite
text: Hormone Leptin May Treat Infertility in Women By MARTIN FINUCANE    BOSTON (AP) -- 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...