It is, but I was only 39 when I had my first heart attack at the same location - near the top of LAD.
I told the nurse I don't smoke, drink, or take drugs. She didn't believe me. She said, "You may as well tell us what you were taking because we've already drawn your blood and we'll find out". Answer came back: nothing.
Well, I’m 69 as of 1/25, and I’m doing great so far, but who knows! At one time or another, the end will come.
Perhaps my case will be the exception :-)