http://www.helium.com/knowledge/270036-how-peoples-portion-sizes-have-contributed-to-the-problem-of-obesity.xml Helium.com > Weight Issues > How people's portion sizes have contributed to the problem of obesity en-us Copyright Helium.com Fri, 28 Aug 2009 05:08:26 GMT Fri, 28 Aug 2009 05:08:26 GMT