I like how this one line is tossed in there, with no other context:
“People with pre-existing conditions appeared most vulnerable, the study added.”
Cause and exacerbate are two different things.
Caffeine, tobacco, sugar, sex, physical activity and tons of other things have an increased potential for dangerous results for “People with pre-existing conditions”
Want a laugh? One doctor in the article said he ruled out all other risk factors except Cannabis. Apparently he found a group of young people who don’t have anything to do with caffeine, tobacco, sugar, sex, or physical activity.