There is not getting around the fact that age is a real predictor for serious problems if you get infected with Covid-19, but you may have also noticed that obesity and diabetes are just as complicating.
In fact, a lot of the interviews on media present a person who is overweight. Those people spend a significant amount of time trying to get well.
Sugar, always the villain to a healthy lifestyle, has also been linked to intense reaction known as a cytokine storm. When the body is faced with an invasion, cytokines flood the body to fight the invasion off. It is not a good reaction, however. The storms cause inflammation and that may cause organ failure.
We need to face facts. Being overweight used to have serious implications for your health. This has been made much worse by the threat of Covid-19.