More than a billion people may be at risk for vitamin D deficiency and its associated diseases, according to a 2007 report in the "New England Journal of Medicine." People who don't eat fish, drink milk or have little exposure to sunlight may have dangerously low levels. Researchers continue to find more diseases associated with vitamin D deficiencies. Because the vitamin plays a key role in brain cell health, scientists are wondering if the deficiency causes memory
Benefits of Vitamin D
Causes of Memory Loss
As brain cells die every year, memory loss may be occurring in people as early as their 20s. Your short-term memory gradually declines, causing you to forget details of recent events. The condition worsens when you experience head trauma, depression, dehydration, or alcohol and drug abuse. But among these causes, scientists cannot agree if vitamin D deficiency should be included. University of Wisconsin researchers recently learned that people with vitamin D deficiencies performed poorly on cognitive tests. The study concluded that there is an association between low vitamin D status and cognitive impairment, but the deficiency did not cause cognitive deterioration.