When do we get a "go away" icon?
Or a troll buster?
US science is always scandalously flawed. In fact science in the US is stalled at 1984 (truth is what we say it is, not what logic tells you, not what testing tells you, in no way based on results you get). Use the honest UK studies, ya know, UK where they have added vape shops to hospitals (we only get fast food outlets at US hospitals).
Smoking can give you a heart attack. Smoking cigarettes can give you heart disease. Vaping is for tobacco harm reduction, not for kiddie fun, and is denied to underage consumers.
If you have a heart condition, caffeine can give you a heart attack.
Exerting yourself in sports can give you a heart attack (see all of the young, fit sports stars dropping dead, and in accordance with the 1984 USA science, nothing to do with the cootie19 injectable protocols).
Opening the door on your surprise birthday party can give you a heart attack.
If you have a heart condition, don't smoke, don't vape, don't drink coffee or alcohol, stay home, stay in a darkened room without TV or music or anything that might be jarring.
Don't drive. Cars in accidents can kill you, and it happens every day of the year. It isn't worth the risk. Stay home.