Low Vitamin D May Double Risk of Dementia

As with so many other perplexing questions about Alzheimer’s disease and dementia, researchers are unsure why there seems to be a link between low vitamin D levels and a higher risk of developing these brain diseases. Now one of the largest studies yet finds that link is even more worrisome: Too little of the vitamin may, in fact, double the risk of developing the devastating conditions. The new research, which followed nearly 1,700 adults over the age of 65 for …