Child and teenage obesity levels have risen ten-fold in the last four decades, meaning 124 million boys and girls around the globe are too fat. <br/><br/>According to a research released today on the World Obesity Day by the Researchers from the World Obesity Federation, the largest increase in the number of obese children and adolescents has been in East Asia. <br/><br/>China and India have seen rates increase in recent years said the report. The researchers said that if the present world trends continue, obese will soon be more common than underweight. <br/><br/>They said East Asia, Latin America and the Caribbean have seen a shift from underweight to obesity within the space of a few decades. Researchers also said they believe that wide availability and promotion of cheap, fattening food is one of the main drivers.