http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. An important new study challenges the widespread perception that bulimia primarily affects privileged, white teenagers such as "Gossip Girl" character Blair Waldorf, who battled bulimia on the show earlier this season. http://www.physorg.com/news156604542.html Medicine & Health Wed, 18 Mar 2009 14:16:16 EST news156604542 Black girls who use marijuana are more likely to engage in risky sexual acts and contract a sexually transmitted disease, a new study finds. http://www.physorg.com/news137154666.html Medicine & Health Tue, 05 Aug 2008 11:31:06 EST news137154666