11 Oct 2017 --- Today marks World Obesity Day, and a new study published in The Lancet has put into perspective the present and future extent of the global health problem. The study notes that there has been a tenfold increase in the number of children and adolescents with obesity worldwide since 1975, and the world will have more obese children and adolescents (aged 5 to 19 years) than underweight by 2022, if current trends continue.