Not just within the body. Life itself is layers upon layers of interconnected systems from a micro to a macro to a global level. Humans have a very surface lev

Not just within the body. Life itself is layers upon layers of interconnected systems from a micro to a macro to a global level. Humans have a very surface level understanding of the our internal systems that make our bodies work, we know next to nothing about most of the ecological and environmental systems we also rely on. Everything from our external environments, to the things that enter our bodies to all the things that live in and on our bodies, all the things play a part in our health and functioning.