A role for vitamin D in brain development and function has been gaining support over the last decade. Multiple lines of evidence suggest that this vitamin is actually a neuroactive steroid that acts on brain development, leading to alterations in brain neurochemistry and adult brain function. Early deficiencies have been linked with neuropsychiatric disorders, such as schizophrenia, and adult deficiencies have been associated with a host of adverse brain outcomes, including Parkinson's disease, Alzheimer's disease, depression and cognitive decline.
https://pubmed.ncbi.nlm.nih.gov/21664231/

Black and Hispanic individuals synthesize less vitamin D per unit of sun exposure than white individuals.
https://pubmed.ncbi.nlm.nih.gov/25112179/

Whites stay winning!!