A new long-term study shows that vitamin E and selenium supplements fail to reduce the risk of Alzheimer’s disease, a type of dementia that causes problems with memory, thinking and behavior.
This comes as a contradiction to previous research suggesting that the supplements could lower the risk of the disease.
The study, published March 20 in JAMA Neurology, began in 2002 to test how the supplements may help in preventing prostate cancer. This study ended in 2009 and 3,786 of the original 7,540 men continued with taking the supplements to see how they may affect the risk associated with Alzheimer’s. The men were randomly chosen to take either vitamin E, selenium, or both, or a placebo. The results showed that the supplements were ineffective. In study it states, “Neither supplement prevented dementia.”
Lead author Richard Kryscio told The New York Times that this study shows that vitamin E or selenium would make no difference on dementia in the long run.