肥胖和代谢综合征是COVID-19的危险因素，根据一项新的综述，代谢综合征增加了病毒感染引起严重疾病的风险。

Obesity and metabolic syndrome are risk factors for severe influenza, COVID-19

https://www.sciencedaily.com/releases/2020/07/200715131234.htm

Maria Smith, Rebekah Honce, Stacey Schultz-Cherry. Metabolic Syndrome and Viral Pathogenesis: Lessons from Influenza and Coronaviruses. Journal of Virology, 2020; DOI: 10.1128/JVI.00665-20