Interesting article on the "fat acceptance movement".  There are definitely positives and negatives to this, and it seems to come down to mental vs. physical health on some level. 

http://www.cnn.com/2010/HEALTH/01/06/fat.acceptance/index.html?eref=rss_health&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2Fcnn_health+%28RSS%3A+Health%29&utm_content=Google+Reader