http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. The world population is over seven billion and all of these people need feeding. However, the energy requirement of a species depends not only on numbers but on its average mass. New research published in BioMed Central's open access journal BMC Public Health has estimated the total mass of the human population, defined its distribution by region, and the proportion of this biomass due to the overweight and obesity. http://medicalxpress.com/news/2012-06-weight-nations-adult-human-biomass.html Health Sun, 17 Jun 2012 20:00:01 EST news259149118