Optimizing CNS DHA Delivery in Elderly Adults at Risk for Dementia

The purpose of this placebo-controlled trial is to compare the effects of 24-weeks supplementation with LPC-DHA and TAG-DHA on cerebrospinal fluid and blood DHA levels, as well as biomarkers of central neurodegenerative and neurotrophic activity, in elderly adults experiencing early signs of cognitive/memory decline including those with mild cognitive impairment (MCI). Extant evidence supports our overarching hypothesis that LPC-DHA supplementation will be more effective than TAG-DHA for increasing central (CSF) DHA levels and improving biomarker profiles in elderly adults. To assess this hypothesis, the following aims are proposed: SPECIFIC AIM 1: To compare the effects of LPC-DHA and TAG-DHA supplementation on peripheral and CSF DHA levels in elderly adults experiencing early signs of cognitive/memory decline. SPECIFIC AIM 2: To compare the effects of LPC-DHA and TAG-DHA supplementation on neurotrophic and neurodegenerative biomarkers. Secondary Aim: To investigate whether changes in CSF DHA levels correlate with changes in objective measures of executive functioning and episodic memory performance.

NCT Number	NCT06933095
Lead Sponsor	University of Cincinnati
Conditions	Eldery People, Cognitive Decline, Memory Decline, DHA CNS Delivery
Enrollment	153 participants
Start Date	2024-09-15
Primary Completion	2029-09-15 (estimated)
Study Completion	2029-09-15 (estimated)
Updated on ClinicalTrials.gov	2025-12-18