Abstract image source Cobalamin (Vitamin B12) has been linked to the development of certain mental illnesses. The psychological manifestations of vitamin B12 deficiency were variable in a survey of 19 patients (14 vegetarians) with confirmed vitamin B12 deficiency, with the majority showing no serious haematological or neurological symptoms. When cells divide, cobalamin (Vitamin B12), a water-soluble vitamin, plays a crucial function in the creation of new DNA. It's been connected to the production of dopamine and serotonin, two neurotransmitters thought to play a role in the aetiology of a wide range of psychiatric diseases, so it's not surprising that this factor is often considered as well. 2 Impaired transmethylation resulting to buildup of hazardous metabolites was the basis for the once-popular one-carbon hypothesis of schizophrenia. 3 Vitamin B12 deficiency has been linked to a wide range of mental health issues, yet the link between the two is generally disregarded. De...