The Living Force
Well there is a lot of science that supports ketogenic diet, and the benefits of animal fats and proteins. There’s also the information about the nutrient bioavailability and density in meats vs the lack thereof in many plants due to anti-nutrients. We also have a good idea of what sugar and insulin spikes do to people over time. And there is also a lot of studies on intermittent fasting as a beneficial eating modality. So people just put 2 and 2 together and basically you have the carnivore diet. There are also studies on cultures that have eaten primarily meat and fat as well.Well, it would be interesting to see some science that supports this diet. Dr. Greger, the guy who founded nutritionfacts.org and has read thousands of scientific papers on nutrition, says that a plant-based diet is ideal for optimum human health. It would seem that the positive effects some people are experiencing on the carnivore diet come from the fact that the diet itself eliminates other substances that caused harm to their digestive systems in the past (e.g. processed foods etc.). The same effects would be seen on most other mono diets.
I think Dr Gregers is just promoting an ideology, but the science does not support it. And since Veganism has been around for a while, we also have their experiences as a data point, and there are a myriad of health problems associated with their way of eating. Just the fact that their diet requires supplements to make up the nutritional deficiencies from lack of animal products is enough reason to take pause.
So I would say it’s the other way around - those who switch to plant based often see improvements because of less junk and processed foods, not because of the diet. Also, seeds and nuts actually require a lot of processing just to be edible and not acutely toxic, like soaking and other methods. On top of that, something like oxalates are not reduced by most of those methods anyway.
And of course you have the basic logic that if you take away farms and such, and place yourself in a forest, good luck finding enough non-animal food naturally growing around you to sustain yourself. Almost everything that moves can be eaten, but vast majority of plants cannot. So it just makes sense that outside of very special and seasonal circumstances in specific parts of the world, it was just much easier for humans to find and eat animals for most of our past.