I remember seeing a doctor talking about Mycarditis a month or so ago. According to her it had something like 60-70% mortality rate after like 6 months.
Either way, the pericardium doesn't really expand very well, so there will likely be damage to the heart tissue.
I remember before "medical grade" wasn't a thing and anything above like 22% was ultra rare, unobtanium. 33%... I imagine that wouldn't even be enjoyable for the average user
That would make sense. I imagine there is a real worry about the heart occluding it's own blood supply.
It'll be interesting to see what the heart attack rates are going to look like in 20-30 years. I predict a "sharp increase" in heart failure.