Wataru Ando, Takeshi Horii, Takayuki Uematsu, Hideaki Hanaki, Koichiro Atsuda & Katsuya Otori
The impact of overlapping risk factors on coronavirus disease (COVID-19) severity is unclear. To evaluate the impact of type 2 diabetes (T2D) and obesity on COVID-19 severity, we conducted a cohort study with 28,095 anonymized COVID-19 patients using data from the COVID-19 Research Database from January 1, 2020 to November 30, 2020.