It's not mystery that as you grow older your arteries harden and cause higher blood pressure than you had in your youth. Diet and exercise slow the progression but do not reverse it (that I've found evidence of).
"Early research shows that people with the condition may be more likely to:
- Get COVID-19
- Have worse symptoms
- Die from the infection
(re:
https://www.webmd.com/lung/coronavir...ood-pressure#1)
I checked a few other sources that, I believe are reputable, and they agree.