Associations between body-mass index and COVID-19 severity in 6·9 million people in England: a prospective, community-based, cohort study – ScienceDirect

At a BMI of more than 23 kg/m2, we found a linear increase in risk of severe COVID-19 leading to admission to hospital and death, and a linear increase in admission to an ICU across the whole BMI range, which is not attributable to excess risks of related diseases. The relative risk due to increasing BMI is particularly notable people younger than 40 years and of Black ethnicity.

Source: Associations between body-mass index and COVID-19 severity in 6·9 million people in England: a prospective, community-based, cohort study – ScienceDirect