Broadly speaking, the term sustainatarian applies to decision-making based on principles of environmental sustainability and fairness to both humans and animals.

Different than a vegetarian (who may eat factory-farmed dairy), or a vegan (who will not eat animal products of any kind) a "sustainatarian" is a person who eats a mostly plant-based diet with occasional sustainable meat, meaning that it is locally and humanely raised. The term also refers to buying fair trade, organic, recycled, reused and/or reusable food, clothing and consumer goods wherever there is a choice.

When you eat dirt for the first time and leave your family to build a shack in the woods

One who only partakes of food that is "sustainably sourced:" for example, vegetarian fare, sustainably caught seafood, or sustainably raised, or game, meat. While a vegetarian meal is Sustainatarian, not all Sustainatarian meals are meat-free;

A dietary preference as described above.