Less vitamin D at birth can predict future mental illnesses like autism
A Lancet study suggests that low vitamin D levels in newborns increase the risk of autism, ADHD and schizophrenia. This discovery highlights the potential benefits of vitamin D supplementation during pregnancy.

In short
- A major study combines low newborn vitamin D with mental disorders
- Low vitamin D schizophrenia, autism and ADHD are associated with risks
- Vitamin D supports brain development and emotional regulation
A newborn with low levels of vitamin D may be more likely to develop mental health conditions later in life later in life such as a newborn, autism, attention deficit-hypercarctivity disorder (ADHD), and schizophrenia, including Queensland University.
It is considered to be the largest population-based study to watch vitamin D and mental disorders published in psychotherapy.
Researchers assessed the status of vitamin D of over 71,000 individuals, many of which were diagnosed with mental health disorders during childhood or early adulthood.
John McGrath of Queensland Brain Institute, who led the study in collaboration with the University of Denmark and the State Serum Institute, said the team examined six mental disorders: major depressive disorder, bipolar disorder, schizophrenia, ADHD, Autism Spectrum Disorder (ASD), and Anoresxian Narvasia.
“We found proof that people with low vitamin D concentration as a child had increased the risk of schizophrenia, ASD and ADHD,” said McGrath.
He said that his findings support the idea that vitamin D supplementation during pregnancy and early life can help reduce the risk of developing certain mental disorders later.

“Vitamin D is important for the development of a child’s brain, and low vitamin D levels are common in pregnant women worldwide,” he said.
To understand the widespread impact of this research, India is a developmental behavior pediatrician and adolescent mental health specialist Dr. Himoni spoke to Narula Khanna, who confirmed that the increasing number of studies had drawn equal conclusions.
He referred to earlier research, which included the 2016 Kohrast study in Denmark and another in Finland, which found that infants born to low vitamin D levels had a higher risk of developing schizophrenia, ADHD and autism.
“Of these, schizophrenia and autism have shown a twice an increase in risk with low vitamin D levels. ADHD, depression and anxiety have also been added, although the evidence is slightly more variable,” he said.
Dr. According to Narula, vitamin D has great effects on brain development. This helps regulate neurotrophic factors, which support neuron growth and connections.
It also affects the brain’s dopamine and serotonin system, which are important for mood and emotional regulation.
“Vitamin D also helps in reducing inflammation in the brain and oxidative stress and supports the formation of nerve routes. These are all important for the development of healthy brain,” he explained.
But what is the best way to ensure enough vitamin D during pregnancy? Dr. Narula recommends a daily supplement of 600 to 2000 IU (international units) of vitamin D3, or even up to 4000 IU under the advice of a doctor.
“Sunlight contact, about 10 to 30 minutes a week, can also help, but it depends on the skin tone, clothes and where you live,” he said.
Dietary sources include fatty fish such as salmon and sardine, egg yolk, fish liver oil, stronghold dairy or plant-based milk, and some grains and juices.

However, he said, “Vitamin D is difficult to receive sufficient amounts through food alone, which is why supplements are often necessary.”
Importantly, vitamin D deficiency is not the only factor that can increase the risk of mental illness.
“Other contributors include genetic tendency, maternal stress or infection during pregnancy, exposure to air pollution, poor nutrition, low birth weight and lack of emotional stimulation in early life,” Dr. Narula said.
Vitamin D-rich foods and supplements are also a challenge. “In low -income countries, stronghold foods may not be common, and the supplement may be very expensive or unavailable,” he said.
Even in rich countries, people with dark skin or people who avoid sunlight due to cultural practices may be at high risk.