More than half of adults and a third of children and teens worldwide will be overweight or obese by 2050, a comprehensive global analysis has concluded. Overweight and obesity rates in adults, children and teens more than doubled over the past three decades, afflicting 2.1 billion adults and 493 million young people with excess weight, researchers reported in The Lancet . Advertisement And unless something changes, about 60% of adults (3.8 billion) and a third of children and teens (746 million)