Can Vitamin D Prevent Alzheimer's Disease?

摘要

In August, researchers announced they had found a strong connection between low vitamin D levels and dementia, a deterioration of mental faculties affecting roughly 5.2 million Americans. In the 1990s, U.S. researchers took blood samples from 1,658 participants age 65 or older as part of a cardiovascular study. About six years later, they followed up to see who had developed health complications, including symptoms of dementia and Alzheimer's disease, its most common form. Later, other U.S. scientists studying nutrition tested the original samples' vitamin D levels.