Wikipedia:Articles for deletion/Vystopia
Since the topic involves health claims, it requires  sourcing. So far I haven't found any: Ms. Mann's self-published, print-on-demandhttps://vystopia.com/ book on the subject likely hasn't undergone any pre-publication review. Ms. Mann also published an article on the topichttp://journal.media-culture.org.au/index.php/mcjournal/article/view/1516 in an open-access media- and culture-studies journal; the journal's editorial boardhttp://journal.media-culture.org.au/index.php/mcjournal/about/editorialPolicies is (as you'd expect) entirely composed of culture and communications scholars, not psychology experts. In the journal article, Mann states that she formulated her theory as a result of her experiences counselling vegans, and then sought to validate it through an internet survey. (The survey recruitment page on her websitehttps://www.veganpsychologist.com/survey/ strikes me as rather leading, as does the wording of the questions.) This is  at best.{{pb}} The other journal article cited is another primary sourcehttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3466124/. Those researchers found that vegetarianism was associated with a greater risk of mental health disorders, but the onset of the disorders generally preceded the adoption of a vegetarian diet. It was not clear whether a disorder increased one's likelihood of adopting vegetarianism or a third variable caused both. It would be original research to conclude that these results support Mann's vystopia theory. {{pb}}When novel or unexpected research results are published, they are often seized upon and uncritically reported by news sources (for instance, look at all the goofy human-interest stories based on one "brexit-induced psychosis" case study.)  states {{tq|"Findings are often touted in the popular press as soon as original, primary research is reported, before the scientific community has analyzed and commented on the results. Therefore, such sources should generally be entirely omitted".}} Of the other sources currently in the article
— NONE, NONE
Stance: comment
Cited policy: WP:MEDRS||WP:MEDPRI (Wikipedia:Reliable sources)