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.
“Watch out when you're getting all you want. Fattening hogs ain't in luck.”
“Appreciate the power of rumor, often malicious, no matter how preposterous, within the local populations you are seeking to help.”