[cageface]

Nonsense. The only supplement vegans require is B12, but most meat eaters are deficient too. Everything else is readily available from a sensible vegan diet. Complex carbs are perfectly healthy, despite the best efforts of meat industry propagandists to confuse the issue. Meanwhile the typical meat-heavy diet is deficient in a number of important nutrients, most notably fiber.

The American Dietetics Association's official position is that vegan diets are healthy for people at all stages of life but don't that that distract you from your favorite bro science blog.

https://www.ncbi.nlm.nih.gov/pubmed/19562864