Can Low Vitamin D at Birth Increase the Risk of Mental Health Disorders?

Published on 21 May 2025 at 17:20

A recent study published in The Lancet Psychiatry suggests that low levels of vitamin D at birth may be linked to a higher risk of developing mental health conditions such as ADHD, schizophrenia, and autism.

What the study found

Researchers from the University of Queensland, in collaboration with Danish institutions, analyzed data from over 71,000 individuals born in Denmark between 1981 and 2005. They examined vitamin D levels at birth and tracked the development of neuropsychiatric disorders later in life.

The findings revealed a significantly increased risk of:

  • Schizophrenia

  • Attention-Deficit/Hyperactivity Disorder (ADHD)

  • Autism Spectrum Disorder (ASD)

The researchers estimate that ensuring adequate vitamin D levels at birth could potentially prevent around 15% of schizophrenia cases, 9% of ADHD cases, and 5% of autism cases.

Why it matters

Vitamin D plays a crucial role in early brain development. While more studies are needed to establish a clear causal link, this research highlights the importance of monitoring vitamin D levels during pregnancy and early childhood as a preventive measure for long-term mental health.

Practical recommendations

  • Safe sun exposure: Vitamin D is synthesized in the skin through sunlight. Moderate sun exposure can help maintain healthy levels.

  • Supplementation: For those at risk of deficiency—such as people living in areas with limited sunlight—supplements may be recommended under medical supervision.

  • Nutritious diet: Include foods rich in vitamin D like fatty fish, eggs, and fortified products.

Final thoughts

This study adds to growing evidence that early nutritional factors play a significant role in mental health outcomes. Monitoring and maintaining adequate vitamin D levels from birth could be a key part of promoting healthier cognitive and emotional development.


Source: News Medical – Early vitamin D deficiency increases risk of ADHD, schizophrenia and autism