A review of the links between overweight populations and COVID-19 related illnesses and mortality.

A World Obesity Federation report shows that the likelihood of death from COVID-19 is about ten times higher in countries where more than half the adult population is classified as overweight than in those countries with lower shares of overweight population.
Overweight is generally used to mean adults having a body mass index (BMI) above 25 and Obesity as having a BMI above 30  BMI Calculator

The World Obesity Federation Report     U.S. Adult Obesity Prevalence - CDC