We don't eat only children of the trees and other plants -fruits and seeds -, and bodies of other beings like plants and animals, we also eat with our mind by watching TV, reading books, etc. And those latest can be really deceptive. Do we really know whose food we dine?
We also eat sunlight - our body absorbs it - if we spend enough time outdoors.
We also nurture ourselves with good-heartedness, and gentle, goodhearted, and benevolent relations.