Highly misleading title. They make you really dig up linked paywalled papers before you see any methods to see what people actually ate. The methods say people were allocated to vegan versus "high meat consumption" foods, with participants free to choose their diets. The only restriction was you had to "try" to increase intake if losing weight, and "try" to decrease intake if gaining weight. (i.e. only isocaloric per…
I can’t access the previous paper by the authors that contains details about the diets. That being said, people don’t eat macronutrients, they eat foods. With equal caloric intake, a vegan diet is going to be higher in fiber and lower in fat and protein than a diet that includes meat. That’s probably part of why it’s healthy, but the reason for doing this study is to understand the mechanisms in more detail, rather t…
Why? This is a non-sequitur. As are the other assertions in my opinion. You can have meat based diets rich in fibre (e.g. the mediterranean diet), and you can have vegan diets completely devoid of them (e.g. living off McDonalds plantburgers for the rest of your life).
The problem is this conflating of veganism, which at its heart is an ethical movement, as a nutritional one. So designing studies that intentionally blur this line isn't doing anyone no favours.
If I see a study comparing vegan junkfood against the mediterranean diet where the vegan diet still comes on top, I'd change my tune. But the reverse scenario, i.e. comparing meat-based diets of a nature that most people would intuitively consider unhealthy anyway (i.e. not necessarily because of the meat) against vegan diets which most people would intuitively consider healthy anyway (i.e. not necessarily because of the veganism) provides zero useful evidence.
And if I were to make a dietary choice for ethical reasons, I would much more appreciate insights coming from impartial science over an echo chamber, academic or otherwise.