This adds up to a 3.3-fold increase in childhood obesity over the past 25 years, mostly due to couch-potato lifestyles and the surging sales of fast, fizzy, and junky food.

• 儿童肥胖加起来是过去25年儿童肥胖人数的3。3倍，肥胖大多数由于沙发薯片的生活方式和食用大量快速，泡沫，垃圾类食品而引起的。