Here are some studies about vitamin D and schizophrenia:

Vitamin D Supplementation During the First Year of Life and Risk of Schizophrenia: A Finnish Birth Cohort Study (2004)

Conclusion: A North Finland birth cohort study found that male newborns who regularly received vitamin D supplementation had a lower risk of developing schizophrenia later in life.

 

A Systematic Review and Meta-Analysis of Northern Hemisphere Season of Birth Studies in Schizophrenia (2003)

Conclusion: Schizophrenics tend to be born more in winter and spring compared to other seasons, when vitamin D-creating UVB radiation is less available. They also tend to be born more in latitudes farther away from the equator, which get less UVB radiation.

 

Low Maternal Vitamin D as a Risk Factor for Schizophrenia: A Pilot Study Using Banked Sera (2003)

Conclusion: “Low levels of maternal vitamin D may be associated with an increased risk of schizophrenia.”

 

 

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