I think the risk factor for severe Covid is insulin resistance. Look up metabolic syndrome. Alot of over 50 yo pilots have this. You must attack it with diet and exercise. Reduce your BMI to 26.
Also Most people treated for Covid receive steroids. These increase your blood sugar.
I am a senior AME with an office at KGKY ( Arlington TX). See my website at
www.SambellPilotPhysical.com my cell 214 693 607five