[BroJoeK]

Here's what's wrong with this data: roughly half of all Americans have some kind of "pre-existing condition" and that number becomes 75% of people over, say, 50 years old.

So, if you're young & healthy, good chance you'll come out of this OK, regardless.
Anyone else -- and that's pretty much everyone "of a certain age" needs to be super careful.

[RummyChick]

No matter your age you may have an underlying condition and not know it.

For example, how many African Americans have heard of Glucose-6-phosphate dehydrogenase deficiency. Yet, many males may have it and some females.

It is not exclusive to that community.

There are a lot of genetic quirks that could have an effect on how your body deals with the vascular issue

How many have heard of Von WIllibrand factor.
I hadn’t.. ...but I may actually have an issue with it given problems i Have had in the past.

It’s a misnomer to think that because you are 30 and fit you will not have a problem.

[SunkenCiv]

It's not the pre-existing condition per se, it's the nature of the pre-existing condition. Bunions have nothing to do with it, for example.