>1.7. Factually deficient diet Vegan diets are devoid of many nutrients and generally require more supplements than just B12. Some of them (Vitamin K2, EPA/DHA, Vitamin A) can only be obtained because they are converted from other sources, which is inefficient, limited[1] or poor[2] for a large part of the population. EPA+DHA from animal products have an anti-inflammatory effect[3], but converting it from ALA (plant sourced) does not seem to work the same[4]. Taurine is essential[5] for many people with special needs, while Creatine supplementation improves memory[6] only in those who don't eat meat.
>FOOTNOTES[1]
https://www.ncbi.nlm.nih.gov/pubmed/9637947[2]
https://www.sciencedaily.com/releases/2009/11/091118072051.htm[3]
https://www.ncbi.nlm.nih.gov/pubmed/28900017[4]
https://onlinelibrary.wiley.com/doi/abs/10.1002/mnfr.201801157[5]
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3501277[6]
https://www.ncbi.nlm.nih.gov/pubmed/21118604 