many years its been since I've taken a formal course in biology or genetics....sometime since the discovery of penicillin is about as much as I'm willing to admit!  I always like genetics, too...but it fits in with my tendencies to reduce everything to gridwork!  

http://www.pubmedcentral.nih.gov/...

Interesting work being done in heart disease.  Similar studies could be found linking neurological conditions to each other, too.  Our understanding is expanding day  by day.  We can't change our genes, but we most certainly can monitor factors such as inflammation markers if we have reason to believe we are genetically    predisposed to certain conditions.