Vitamin D-deficient individuals are twice as likely to be diagnosed with schizophrenia as people who have sufficient levels of the vitamin, according to a new study, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. Schizophrenia is a mental illness with symptoms that can include delusions and hallucinations. Since schizophrenia is more prevalent in high latitudes and cold climates, researchers have theorized vitamin D may be connected to the disorder.
The researchers reviewed the findings of 19 observational studies that assessed the link between vitamin D and schizophrenia. Combined, the studies looked at vitamin D levels and the mental health of 2,804 adult participants. Findings of several observational studies on vitamin D and schizophrenia, it is found that people with schizophrenia have lower vitamin D levels than healthy people. Vitamin D deficiency is quite common among people with schizophrenia.
The meta-analysis found that people with schizophrenia had significantly lower levels of vitamin D in the blood compared to the control groups. The average difference in vitamin D levels between schizophrenic patients and control participants was -5.91 ng/ml. People with vitamin D deficiency were 2.16 times more likely to have schizophrenia than those with sufficient vitamin D in their bloodstreams. In addition, 65 percent of the participants who had schizophrenia also were vitamin D deficient.
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