Currently, about 20% of adults in the US are classified as obese.

obese 是形容词，意思是"肥胖的"，指体重严重超标的健康状况。这个词来自拉丁语obesus，由前缀ob-（表示"过度"）和词根edere（"吃"）组成，字面意思是"吃得过多的"。