Liver contains unique nutrients that are critical for the human diet and were historically treated with great respect and value by groups like the Hadza.

“it has biotin it has riboflavin it's the best source of riboflavin it has zinc it has copper it has these nutrients we need selenium all these things”

“that has so many nutrients in it they're difficult to obtain other places biotin vitamin a folate riboflavin peptides manganese zinc copper which is valuable and i'll talk a little about copper in this video too so many compounds vitamin k2 choline the list goes on and on that are uniquely found in liver”

“but really what liver is is the richest source of bioavailable vitamin a and choline and biotin and folate and riboflavin that we know of plus a million other unique micronutrients plus peptides that we don't even think about”

“this food contains so many incredible nutrients things like zinc copper which balances zinc selenium biotin which is a b vitamin that is rare in muscle meat that is important for hair skin and nails growth riboflavin another b vitamin that is very rare in muscle meat and actually rare unless you're eating organs in general and is involved in methylation like folate which is another thing this organ contains preformed vitamin a and retinoic acid which is essential for healthy development of all sorts healthy skin healthy sexual development healthy eyes choline which is involved in neurotransmitters and cell membranes learning and memory this organ also contains things like ergothioneine an antioxidant that's been shown to potentially mitigate telomere shortening an aging hepatocyte growth factor another peptide involved in the vascular system and healthy vasculature hepsidin involved in the immune response this organ contains all of these things”

“furthermore there are so many unique nutrients in liver that you cannot get many other places it is a critical part of the diet we never got rid of liver in tanzania with the hadzo we always treated the liver with respect it was treated like gold placed on a rock very carefully divided among the tribe this is clearly one of the most valuable organs in a an animal in a kill end of story”

“liver has so much of basically everything you get unique things that are really not found much in muscle meat like riba flaven or bioavailable vitamin A you get more choline than muscle meat you get copper which isn't really found in muscle meat but balances the zinc that's in muscle meat you get vitamin K2 which is found in muscle meat but higher in liver you get more biotin in liver it's just so it's a powerhouse it's amped up”