Protein from those sources are not as bioavailable, and are therefore not “extremely excellent sources of protein”. Also, forks over knives has been disproven a hundred times over. Not saying everything in that doc is wrong, but it has enough wrong that it is not a credible source of information.
The China Study, one of the largest ever undertaken has been vetted and reviewed by 100s and thousands of scientists.
The case studies presented in the documentary are accurate and credible, with numerous historical facts.
As for bioavailability, the difference isn't very huge and you'll get more then enough amino acids from plant based sources without all the carcinogens that come from animal based sources.
Animals do Not make their own protein. They all get it from plants. Plants make the protein. Then the animals eat it. When you eat an animal, your just eating recycled protein. So, why not just cut out the middle man.
