I thought this was going to be a documentary about a fairly interesting study; what it turned out to be was insanely heavily biased vegan positivism based on bad science and seemingly bad faith. It also was pretty lacking in the "documentary" area as well, as it seemed to be to be mostly an advertisement both for veganism and for the vegan companies and owners which appear in the series.
The focus of the documentary is not on the twins and the experiment for which this documentary is named, but rather the effects of meat/processed foods on the environment and human health. However it:
1. Provides us with really no new information. Everyone knows by now that eating tons of bad quality and processed foods is bad for you. No need to hammer us over the head with it in 2024, and
2. Does not provide insight, studies, research, or really anything other statements presented as absolute fact provided by the kinds of people who have vegan tattoos. Maybe they're a little biased? Hmm.
Speaking of biased, this documentary does not provide ANY arguments for the other side. Not one. In the minds of whomever made this, and the people in it, there isn't a single benefit to eating meat. In one of the experiments they do to prove how bad our meat is, they get the most diseased looking salmon I've ever seen and try to cook it and it turns out looking horrible. Their point is that farmed salmon these days is plagued with all sorts of nasty things, but I've never in my life seen a salmon like the one they used in a grocery store or really anywhere. If they were fair they'd get several salmon to back up their claim (that something like 1 in every 25 farmed salmon in the store is messed up). Surely they didn't just get an abomination of a salmon to reaffirm their argument? Well actually yes they did do this and you can tell because you can see the another salmon in the shot, meaning they intentionally picked the worst looking one to demonstrate; this is called selection bias and is not the basis of good science or a good documentary. Also, they do not mention AT ALL how money is factor in preventing people from eating healthier, how overpopulation is leading to many of these issues, really anything socioeconomic, in the end it's just all blamed on the meat industry.
Lastly, the study itself was incredibly flawed. They give one twin a plant-based diet and the other an (healthy) omnivorous diet, have them exercise, and then measure their bodies before and after the 8-week long study and make conclusive statements based on that? They do not measure (or if they did they didn't show it) how many calories or macros each twin is eating with each meal. Surely if you're going to see how a vegan diet vs. An omnivorous affects a person, you'd make sure the calories and macronutrients are at least similar? There's no transparency at all in this study, so it just comes across as fearmongering.
I do agree with the sentiment of eating less meat and processed food. I think everyone is aware of the dangers of everything provided in this documentary now. Everyone knows they should eat healthier, and everyone knows which foods are healthy and which aren't. If plant-based meat tasted and had the same texture as meat, I'd switch immediately, and I think many others would as well; it's kind of a no-brainer. However when you present an incredibly one-sided biased flawed piece like this as if it's some sort of scientific breakthrough, really all it does is make the people involved look better.