Absolutely, i Eat a bit of wild game liver, and i do eat grass fed organic beef liver at minimum once per week, It is some great advice i recvd yrs ago from John Meadows. I can absolutely 100 % say that i have a different feel and energy level since starting this and each time i eat it i feel an effect for certain. I am a bit too fussy probably with the organic stuff, but most of my food is organic and i have a good buddy that has a ranch and self slaughters and processes and i get a wealth of bones for broths and soups, connective tissued meats for slow cooker and collagen replenishment with vitamin c ingested with these meals and liver and heart meat as organ meat is amazing as you mentioned. I don't eat kidneys and tongue, freaky deaky to me...lol
But the liver is the filter for the body operations system and i like to stick with organic and grass fed as much as possible and once my beef are ready to slaughter i will have a bunch on hand as well as my buddy supply.
Great vitamin A source in liver...