Researchers have linked dietary data from over 55,000 individuals with data on the environmental impacts of the foods they eat. The team, from the Livestock, Environment and People (LEAP) project at the University of Oxford, found that the dietary impacts of vegans were around a third of those of high meat eaters. They also saw a 30% difference between high- and low-meat diets for most of the measures of environmental harm.
I don’t give two shits about enviornmental measures, how is it by dietary measures?
Oh, right:
https://www.saintlukeskc.org/about/news/research-shows-vegan-diet-leads-nutritional-deficiencies-health-problems-plant-forward
"avoiding all animal foods may lead to nutritional deficiencies in vitamin B12, omega-3, calcium, zinc, iron, magnesium, and high-quality protein.
These deficiencies may be associated with increased risk for certain types of cancer, stroke, bone fractures, preterm birth, and failure to thrive. Avoiding consumption of animal-sourced food may also be related to higher rates of depression and anxiety. Hair loss, weak bones, muscle wasting, skin rashes, hypothyroidism, and anemia are other issues that have been observed in those strictly following a vegan diet."
Notice the may.
Eating animal foods is also linked to increased risk of certain types of cancer, stroke, etc. It’s totally possible to avoid malnutrition even on a vegan diet. It just requires some consideration.
The full paper promotes a plant-forward diet supplemented with modest amounts of nose-to-tail animal consumption. Even this paper isn’t promoting the rampant consumption of animal muscle typical of western diets.