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Efficacy of Fish Oil Supplementation on Cognition in MCI Patients and the Influence of the APOE4 Allele

This study has been completed.
Radboud University
Information provided by:
Wageningen University Identifier:
First received: August 30, 2008
Last updated: January 11, 2011
Last verified: January 2011
To study the short term effects of a pharmacological dose of fish oil on cognitive performance and on cerebral blood flow. Furthermore, we want to investigate whether carriers of the APOEε4 allele respond differently to fish oil treatment compared to non-carriers.

Condition Intervention
Mild Cognitive Impairment Dietary Supplement: fish oil Dietary Supplement: placebo, sunflower oil

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Challenge Study: The Efficacy of Fish Oil Supplementation on Cognitive Performance in MCI Patients and the Influence of the APOE-epsilon4 Allele

Resource links provided by NLM:

Further study details as provided by Wageningen University:

Primary Outcome Measures:
  • cognitive performance [ Time Frame: baseline and after 4 weeks ]

Secondary Outcome Measures:
  • blood flow-velocity in the middle cerebral arteries (assessed with TCD) and cortical tissue oxygenation, cerebral autoregulation, cerebral blood volume (assessed with NIRS [ Time Frame: baseline and after 4 weeks ]

Estimated Enrollment: 40
Study Start Date: October 2008
Study Completion Date: January 2011
Primary Completion Date: January 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Dietary Supplement: fish oil
3 g fish oil (3078 mg) total EPA 1512 mg and total DHA 1026 mg
Placebo Comparator: 2
Placebo: sunflower oil
Dietary Supplement: placebo, sunflower oil
3 g of sunflower oil


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Men and women
  • Diagnosed as having amnestic MCI: based on specific memory disturbances (cut-off of 1 sd, single or multiple domain amnestic MCI, according to Busse A et al37)
  • Presence of a principal caregiver willing to assist for a successful participation
  • Informed consent signed

Exclusion Criteria:

  • Current or recent (<4 weeks) use of fish oil supplements
  • Consumption of fish more than 2 times/week
  • Current use of dementia (Alzheimer) medication
  • Current use of acenocoumarol or other anti-thrombotic drugs (because of the high dose of fish oil)
  • Serious liver disease
  • Use of more than 4 glasses of alcohol per day
  • Unable to participate as judged by the responsible medical physician
  • Allergy to fish(oil)
  • Swallowing problems
  • Participation in another clinical trial less than 2 months before the start of the trial or at the same time
  Contacts and Locations
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Please refer to this study by its identifier: NCT00746005

Ziekenhuis Gelderse Vallei
Ede, Gelderland, Netherlands, 6710 HN
Radboud University Medical Center
Nijmegen, Gelderland, Netherlands, 6525 GC
Sponsors and Collaborators
Wageningen University
Radboud University
  More Information

Additional Information:
Responsible Party: Lisette de Groot, Wageningen University Identifier: NCT00746005     History of Changes
Other Study ID Numbers: 2008/112
Study First Received: August 30, 2008
Last Updated: January 11, 2011

Keywords provided by Wageningen University:
mild cognitive impairment

Additional relevant MeSH terms:
Cognition Disorders
Mild Cognitive Impairment
Neurocognitive Disorders
Mental Disorders processed this record on September 21, 2017