A truly “non-harm” diet is challenging because almost all food production affects ecosystems, plants, and animals in some way. However, here are a few approaches that aim to minimize harm:

1. Fruititarianism: Eating only fruits, nuts, seeds, and other plant parts that can be harvested without killing the plant. For example, apples, berries, and nuts naturally fall off the plant or tree.

2. Foraging: Gathering wild foods like berries, mushrooms, and nuts without disrupting the ecosystem or harming the plants.

3. Permaculture and Regenerative Agriculture: Supporting or growing food in ways that enhance biodiversity, soil health, and ecological balance, minimizing harm to wildlife.

4. In Vitro and Lab-Grown Foods: Emerging technologies for lab-grown meats and vegetables might reduce the need for traditional agriculture and its associated harm.

5. Algae and Fungi-Based Diets: These can often be cultivated with minimal environmental impact.

While no diet is completely free of harm, these approaches aim to reduce it significantly.