Hehehe... I don't know if I count. Being a nurse makes it kinda a cheat, but uh, it's in an over the counter med so maybe not.
Oh, you too? Yeah, this is almost exactly what I would have said if I had gotten in here before you.
This said, I have kind of noticed a disproportionate number of nurses and other medical professionals for whatever reason seem to be attracted to the world of fictional writing, so that could be something that taints the numbers a little for this sort of poll.
Another thing of concern is, just how much about Cortisol would one need to know to actually qualify? Having heard the word, and having a vague idea of what it does? Actually knowing it's an adrenal hormone? Knowing the signaling mechanisms behind Cortisol's release, as well as the common target organs and it's effects on the body? There are several layers of knowledge on this one.
(maybe a way to sort out a few of the special cases would be adding a 3rd option that says "I had A&P 3 in college, so of course I know." It covers all the bases, including CNAs who are going for a nursing degree but haven't achieved it yet.)