"Documentary" (more like propaganda) is extremely biased and full of claims that are just not accurate. A lot of those mind blowing experiments are not research. Much of the experiments are not disclosed and only to a hand full of sample size.
Almost everyone could benefit from eating less meat. But do your research and don't just take something at face value.
https://www.biolayne.com/articles/re...ific-analysis/
https://www.menshealth.com/nutrition...ie-fact-check/
https://medium.com/@timrees/watched-...is-fcc877b0104