I thought this was going to be an interesting look at how differences in our diet can affect our health. It was not. What I actually watched was snippets of a study that was too small to produce good quality data, interspersed in long sections of footage of factory farms and deforestation, with various people talking over it.
Now, I'm all for reexamining how and where our food is produced to make the supply more sustainable and ethical, as well as the types and quantity of food we eat, but this doesn't help. It not only places 100% of the blame squarely on the meat and dairy industries, it does so with all the subtlety of taping a note saying "BE VEGAN" to a brick and throwing it at your head.
There weren't any good insights into diet that you can't find in better, less misleadingly advertised documentaries, and its ham-fisted handling of the subject matter has already proven to have pissed more people off than it informed.
Objective, helpful, and rigorous data cannot be found here.