Could a daily vitamin d pill protect your aging brain?
NCT ID NCT03613116
First seen Apr 07, 2026 · Last updated May 14, 2026 · Updated 4 times
Summary
This study tests whether high-dose vitamin D (4,000 IU daily) works better than the standard dose (800 IU) at correcting vitamin D deficiency and slowing memory decline in older adults. Researchers will follow 180 people aged 65-90 with low vitamin D levels for 3.5 years, using brain scans and thinking tests. The goal is to see if this simple supplement can help prevent dementia.
Disclaimer
Read more
Show less
This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for COGNITIVE DECLINE are added.
By submitting, you agree to our Terms of use
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
By submitting, you agree to our Terms of use
Locations
-
University of California, Davis Alzheimer's Disease Center
Walnut Creek, California, 94598, United States
Conditions
Explore the condition pages connected to this study.