Humans can survive and thrive on meat alone, if you eat every part of the animal. But I wouldn’t recommend it if the animals are raised in factory farms.
Or if you’re a vegan, potatoes and oats also got you covered for everything except Vitamin B12. Which you used to get from the soil the plants grew in, before factory farming essentially sterilized it. Or from meat, before they started to feed corn to cattle.
Nowadays (in American supermarket food) the only source for B12 is artificially produced supplements. Either taken by you directly, or fed to cattle as an extra step.
Most creatures don’t have much variety in their diet, I think!
Humans can survive and thrive on meat alone, if you eat every part of the animal. But I wouldn’t recommend it if the animals are raised in factory farms.
Or if you’re a vegan, potatoes and oats also got you covered for everything except Vitamin B12. Which you used to get from the soil the plants grew in, before factory farming essentially sterilized it. Or from meat, before they started to feed corn to cattle.
Nowadays (in American supermarket food) the only source for B12 is artificially produced supplements. Either taken by you directly, or fed to cattle as an extra step.