These statistics certainly don't come from everywhere, but the point is to show that they are increasing without being noticed. The prevalence of childhood obesity is also causing public concern around the world. For example, in Taiwan, childhood obesity has increased significantly in recent decades. In 1970, only about 2 percent of Taiwanese schoolchildren were considered obese. By 1988, this figure had risen to 17% (Wu 2001). To date, one in four children is considered overweight in Taiwan (Taiwan Medical Association for the Study of Obesity (TMASO) 2007)” (H.-H. Chang, RM Nayga Jr..