We ought to be beating our chests every day. We ought to look in the mirror, stick out our chests, suck in our bellies, and say, 'Damn, we're Americans,' and smile.
A vegan diet takes care of most of what we need to do. But you'll also want to minimize the use of oils generally, because while olive oil and other vegetable oils are better for your heart than chicken fat, they are as fattening as animal fats.