Im wondering because i read this about synthetic blood from wikipedia:
This doesent make much sense as everything the body needs in form of pretty much anything can be created easily in a lab or outside the human body right? Why cant blood we create ourselves replace that made by the body? Is it money, technology or is it our body that is lacking?Blood substitutes (also called artificial blood or blood surrogates) are used to fill fluid volume and/or carry oxygen and other blood gases in the cardiovascular system. Although commonly used, the term is not accurate since human blood performs many important functions which blood substitutes may not. Red blood cells transport oxygen, white blood cells defend against disease, platelets promote clotting, and plasma proteins perform various functions.
I thought the entire digestion system was there only to give the body nutrition by giving fuel to our blood. So if we could just refuel our bodies with synthetic blood the digestive system should become absolete, bringing us one step closer to mechanizing humans in the future.