Originally Posted by mschwett

it's rare - no need to worry if you have no symptoms or family history. my dad presumably had the same condition, didn't manifest until his mid 50s, but he was an all american lacrosse player in the 60s, ran and played basketball much of his life, etc. we both came from the school of "if you don't feel like you're about to die, you're not pushing yourself hard enough!"

when he started having issues the science wasn't far enough along to identify it as a genetic condition, so no alarm flags were raised for my brother and i.