Vitamin D is a controversial topic among doctors, mainly because studies about its health effects have been so conflicting. While vitamin D is critical for many body systems, including bones and the brain, recent studies that have tested these assumptions haven’t been reassuring. In March, for example, a large study found that vitamin D supplements did not lower the risk of falls, or their resulting injuries, in the elderly… That called into question other potential health effects of the vitamin, so researchers led by Joshua Miller at Rutgers University and University of California Davis decided to look at how vitamin D levels among different ethnic populations affected brain function. Because low vitamin D levels have been connected to a higher risk of dementia and Alzheimer’s disease in previous studies, the group wanted to further investigate the relationship, especially among ethnic groups who traditionally have low levels of vitamin D… People with lower levels of vitamin D also had lower scores on certain memory and executive function tests. This pattern remained even after the researchers accounted for factors such as age, education, BMI, circulatory issues that can affect dementia, and the presence of known Alzheimer’s-related genes.
/ / / How Vitamin D Affects Alzheimer’s Risk