SA scientists find a causal link between vitamin D deficiency and dementia

The study found nearly one in five cases of dementia might be prevented with a vitamin D intervention. Photo: Getty

For years, scientists have conducted studies that found vitamin D deficiency is associated with a substantially increased risk of all-cause dementia and Alzheimer’s disease.

The associations were strong but these studies didn’t find a direct causal link between vitamin D deficiency and the onset of dementia.