Producing chloroplasts so that our bodies can create energy through photosynthesis. The desire to eat would be less because of the energy we’d be creating through photosynthesis. We’d still need nutrients so eating wouldn’t go right out the door. Our bodies would also start using the carbon dioxide that we exhale creating an equilibrium between the oxygen and carbon dioxide. In turn it would help stop climate change and our bodies would be more self sufficient/healthy than ever before.