Everything a human eats has to have been alive at some point. We cannot pick up plain dirt and digest it. For it to be any use to our metabolism, that wyrd quality known as “life” must have interrupted that matter’s existence at some point.
And it doesn’t matter if that dirt was formerly part of “life.” That’s not good enough. Yet the matter we eat is dead. The matter we ingest has to have been recently living, but not too long dead. It’s bizarre.