根据《柳叶刀》发表的一篇论文表明，全球范围内，估计有23亿儿童和成人超重，超过1.5亿儿童发育不良。最贫穷的国家出现了高水平的超重和肥胖以及营养不良，肥胖和营养不良这两个问题已经越来越紧密地联系在一起。

More than 1 in 3 low- and middle-income countries face both extremes of malnutrition

https://www.sciencedaily.com/releases/2019/12/191216203756.htm

Journal Reference:

1. Barry M Popkin, Camila Corvalan, Laurence M Grummer-Strawn. Dynamics of the double burden of malnutrition and the changing nutrition reality. The Lancet, 2019; DOI: 10.1016/S0140-6736(19)32497-3