Vegans are mentally ill. It stems of a combination of nutrient deficiencies and the brainwashing they have subjected themselves to where they end up believing it is "unnatural" "immoral" "wrong" to eat meat as humans when we have eaten meat for hundreds of thousands of years. The only unnatural thing is eating only plants, something humans are not adapted to do. We are definitely not herbivores. We are much closer to obligate carnivores as there are essential nutrients we can only get from meat. For example: B12, Retinol (A), Pyridox-al/amine (B6), D3, K2, DHA/EPA (Omega 3). Non-essential: Creatine, Carnosine, CLA, CoQ10, Carnitine, Taurine, Cholesterol and Heme-Iron. Calcium, Zinc, Iron, Phosphorus and magnesium are found in plants but absorption is significantly reduced by oxalates, phytic acid and tannins. With just a B12 deficiency, there is research linking it with diseases such as dementia, parkinson's, depression, cognitive decline. In short, it would be fair to say being a vegan makes you woo woo and psycho. The real vegan conspiracy is to make everyone mentally ill it seems. But of course, mental illness is only a part of the ill-health veganism will lead you to eventually. Symptoms of vitamin B12 deficiency If you have anaemia caused by a vitamin B12 deficiency, you may have other symptoms, such as: -glossitis -mouth ulcers -paraesthesia -damage to parts of the nervous system (peripheral neuropathy) -disturbed vision -irritability -depression -changes in the way you think, feel and behave -a decline in your mental abilities, such as memory, understanding and judgement -infertility -stomach cancer -CVD/heart failure It's important for vitamin B12 deficiency anaemia to be treated as soon as possible. Although many of the symptoms improve with treatment, some problems caused by the condition can be irreversible if left untreated, unless neurological.