I'd still say our sedentary lifestyles coupled with overeating accounts for most heart disease.
Just like our gluttony for cheap goods and foods give us Chinese crap and McGreaseburgers with lousy service, so also does it give us more miserable lives as we age.
I get my share (and probably a bit more) of burgers, but usually not at Mickey-D's. However, I'd say that my life isn't so miserable. Maybe I'm having an issue with diarrhea and have a bum knee, but I'd say it was still pretty good.
While we are working here in Texas with our Summer job, as we drive through smaller cities and towns, I notice a fairly large number of older folks sitting on their front porch and just watching other people go by. I figure that I am VERY WELL blessed to be one of the ones passing by them and getting to see new country.