In response to the continued climate instability unfolding before us, Eastern Orthodox theologians have repeatedly called for humanity to change its ethos from one based upon a theory of continual consumption, to one with a Eucharistic and aesthetic ethos of love, virtue, sacrifice, abstinence and repentance; all of which are essential teachings for our choice of diet and the products we choose to purchase. In essence, they remind us of patristic teachings to restrict and control our desires. This presentation begins with an outline of the interconnection of climate change, dietary choices, animal suffering and food sustainability. It will indicate that our misuse of God's gift in order to meet our ever-increasing desire for animal-based food products has created an imbalance in the natural world, and caused considerable harm to humans, animals and the environment. The presentation will then investigate three specific questions. 1) Is it a sin to continue to consume food from the intensive animal-agriculture system once we become aware of its devastating ecological and animal-suffering effects? 2) Who will inform the local parish community of this sin? 3) What advise might be given in order to achieve genuine repentance of this sin?