My own wild guess is that it is no younger than anywhere else; in fact, I wouldn't be surprised if they weren't a bit older.
Thanks...
I lost two brothers at the age of 51 from stroke and heart attack. They ate real 'southern' (Alabama) and laughed at me when I tried to correct them.
I've managed to make it to 61 by eating lots of fruit and vegetables prepared w/o so much fat.