So I spent a bit of time looking around to find what study this is supposedly based on since the article linked doesn't provide any sources to their statements (surprise) and I can't find anything other such quality sources such as The Sun and a few blogs, all of which are basically variants of this article and of course lack any kind of original source.

Best I can find out is this concerns a diet which leads to a Vitamin B12 deficiency, with animal products being a major source of B12 and a deficiency "can potentially cause severe and irreversible damage, especially to the brain and nervous system." This has been known for absolutely ages to the point that the UK Vegan Society even acknowledges that you need to replace your B12 intake either with vitamin fortified foods or just outright take a vitamin pill.

So no, a vegan diet will not give you brain damage, a terrible and unbalanced diet (vegan or not) absolutely can. But of course, expecting a website like the "conservative post" to actually tell all the facts and not twist a single statement into a juicy and misleading headline is probably a good sign of brain damage so who am I to judge?

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