Thanks for the info and story, Bob!
My dad died in his early 50's of a heart attack (on a treadmill, no less), so I'm probably overly paranoid. I did notice earlier at my mom's she (at 67) does have the crease quite prominently in both ears, but I'm hesitant to mention it to her as she is seeing a doctor, on aspirin therapy (per her doctor), and being treated for high cholesterol, etc., so I don't want to alarm her more than necessary (she freaks out like I do).
I definitely don't have the prominent crease she has or that I've seen in pictures; whether a slight indent about where it would start should be troubling, I don't know (and I can almost see one if I try, but I really feel like I'm trying too hard to see something that's not yet really there) - I suppose I can ask the doctor when I see her in a couple weeks - hopefully she's familiar with this phenomenon.
But you're right. Regardless, it's not something I can change; what I can do is try to live a healthy lifestyle. In the last few months and years especially, I've been trying to eat healthier (I eat a little bit of everything but try to stick to mostly whole foods and stay away from too much processing where I can) and supplementing with some helpful things (garlic, fish oil, Q10, fruit and veggies both as supplement and the real thing, pomegranate juice since pomegranates seem particularly promising), moderating alcohol intake a bit, don't smoke (even cut out e-cigs), and am exercising regularly (usually the treadmill...hopefully history won't repeat itself). I still need to lose a bit more weight and drop my blood pressure a tad (it's sometimes high, but I'm starting to think it has to do with anxiety when I take it more than being actually always high because it falls pretty nicely once I calm down).
I also happen to have Gilbert's syndrome, which means elevated bilirubin, and as luck would have it, that's actually *inversely* associated with heart disease risk, so I may have a bit of extra fluke protection. Plus, while my mom is fully Caucasian, my dad is actually East (Asian) Indian, so I'm not sure how relevant the crease is anyways given it's not supposed to be accurate in Asians...
Thanks again for the opinion and info, and glad you're living happily and healthily!