An Australian study has found that deficiency in vitamin D has a causal relationship with the development of dementia, with both inadequacy and excessive levels of the vitamin associated with a smaller brain volume.
“Our findings have important implications for dementia risks,” said professor Elina Hyppönen from the University of South Australia. “In this UK population, we observed that up to 17 percent of dementia cases might have been avoided by boosting vitamin D levels to be within a normal range.”
The study, published in the American Journal of Clinical Nutrition, measured individuals’ vitamin D3 levels as an overall estimate of vitamin D levels….