Apart from the issues mentioned above, vitamin D has been massively linked to brain health. Its contribution to brain functioning is a reason why its deficiency affects cognitive functioning. Vitamin D deficiency has been clinically linked to neurological diseases and neuropsychological disorders, cognitive impairment and neurodegenerative diseases.
Research studies have confirmed the function of vitamin D as a neurosteroid which is vital for the normal functioning of the brain. Low levels of this vitamin may lead to neurodegenerative conditions such as multiple sclerosis, Alzheimer’s disease, Parkinson’s disease and neurocognitive disorders.
Studies have also linked vitamin D with depression. A 2017 research study published in the Journal of Diabetes Research had found that vitamin D supplementation had actually improved the mood in women who had type 2 diabetes.