"Fat cells produce large amounts of a protein used by the coronavirus to infiltrate human cells, researchers have warned..."

"... pointing to a potential explanation for why obese people are more severely affected....  Fat cells in obese or diabetic patients produce higher amounts of angiotensin-converting enzyme 2 (Ace2) than those in other people. It is the protein that the coronavirus binds to in the bodies of infected people, they said.... [F]at might therefore 'serve as a viral reservoir.'"

The London Times reports on a study published in the journal Obesity.