a number of studies and anecdotal reports have pointed to obesity being a notable risk factor for COVID-19—and often the primary risk factor for younger patients. This month, Kass and two Hopkins colleagues gathered preliminary findings from six ICU units around the United States, concluding in a Lancet report that "in populations with a high prevalence of obesity, COVID-19 will affect younger populations more than previously reported."
This risk is particularly relevant in the U.S. because the prevalence of obesity is around 40%, compared to a prevalence of about 6% in China and 20% in Italy.
Very informative article. Read the whole article, good, solid explanations of the science.
Probably a factor in why the United States has been hit so hard.
https://hub.jhu.edu/2020/06/01/david-kass-obesity-covid-19/