Earlier quoted context omitted.
Bad news is that heart muscle doesn't rebuild, like how our body muscles do. But a doctor can ensure how much of our fear is right.
Funny enough, one of the original MRNA treatments developed my Moderna was something that would temporarily activate stem cell generation around heart tissue. Sounds like in testing, the mice that got the treatment after having a heart attack were much less likely to have subsequent heart attacks. https://www.youtube.com/watch?v=T4-DMKNT7xI
But I ended up googling it and sort of wish I didn’t ask the question.
https://www.theawl.com/2016/04/if-you-give-a-mouse-a-heart-a...