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Dietary InterventionNCT07031076

Investigating the Cognitive and Brain Health Benefits of Lean Pork Consumption

A study testing Ready-to-eat lean pork in frozen, 5-oz packages in people with Dietary Intervention and Dietary Proteins, run by University of Nebraska Lincoln at 1 site in United States.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

The goal of this clinical trial is to learn if eating more lean pork will lead to better cognition and a healthier brain in older adults. The main questions it aims to answer are: Does eating more lean pork lead to higher scores on cognitive tests and better quality of life? Does eating more lean pork lead to slower… Read more about this study

Who is it for?
Ages 65 to 75 yearsHealthy volunteers can take part
What is being tested?
Ready-to-eat lean pork in frozen, 5-oz packages
Could I receive a placebo?
No, everyone receives an active treatment
How many people
0 participants
Where
1 siteUnited States
Study dates
Aug 2025to Dec 2026
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 65 to 75 years
  • All sexes
  • Healthy volunteers accepted
  • Older adult

Who may be able to join

  • Provision of signed and dated informed consent form
  • Stated willingness to comply with all study procedures and lifestyle considerations and availability for the duration of the study
  • Males and females; Age 65-75
  • Willingness to adhere to the ready-to-eat lean pork intervention regimen or the control condition regimen (depending on group assignment)
  • Score between 51 and 80 out of 100 on the Healthy Eating Index
  • Consume less than or equal to 15 grams of lean pork per day on average prior to participating in the study
Show all 15Show fewer
  • BMI between 18.5 and 39.9
  • Mini-Mental State Examination score 26 or greater
  • Vision scored greater than 20/50
  • No history of subjective cognitive impairment
  • No evidence of loss of instrumental activities of daily living
  • Minimal dependence in hygiene, bathing, and dressing
  • Low pork consumers
  • Willing to discontinue dietary supplement use throughout the duration of the study, if they are consuming supplement at the time of the registration
  • No known contraindication to MRI scans as determined by the MRI screening survey questions

Who cannot join

  • Current use of medications that may affect their responses to dietary intervention, such as amphetamines, antidepressants, anti-diabetic medications, laxatives, antibiotics, statins and diuretics.
  • Known intolerance or allergy to pork
  • Current use of nicotine products, including vaping
  • Previous use of nicotine products, including vaping, within the recent 6 months at the time of pre-screening
  • Diagnosis of mild cognitive impairment
  • Diagnosis of any dementia, including, but not limited to, Alzheimer's Disease, Lewy body disease, vascular cognitive impairment and frontotemporal dementia
Show all 16Show fewer
  • Diagnosis of psychiatric illness within the last 3 years
  • Stroke in previous 12 months
  • Cancer diagnosis within past 3 years, except prostate cancer or basal cell carcinoma
  • Current chemotherapy or radiation treatment
  • Planned move from study area
  • Scheduling conflicts that would preclude participation in study activities
  • Prior or ongoing involvement in cognitive training or dietary intervention studies
  • Contraindications for MRI
  • Dietary quality outside the average range (i.e., HEI score less than 51 or greater than 80)
  • Other inability to complete study activities

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Nebraska-Lincoln

    Lincoln, Nebraska, 68588

Other trials in United States

About this study

The goal of this clinical trial is to learn if eating more lean pork will lead to better cognition and a healthier brain in older adults. The main questions it aims to answer are:

  • Does eating more lean pork lead to higher scores on cognitive tests and better quality of life?
  • Does eating more lean pork lead to slower brain aging and/or better brain function?
Read more

Researchers will compare participants in the experimental group (participants undergoing the dietary intervention) to control participants (participants that do not undergo the intervention).

Participants will:

  • Be instructed to prepare and consume ready-to-eat pork meals along with their regular diet and not eat any more pork other than what they are given; or be instructed to consume their regular diet
  • Visit the study facilities once every week to pick up ready-to-eat pork meals and complete dietary surveys; or complete dietary surveys every 4 weeks
  • Visit the study facilities before and after the 16-week of intervention period for researchers to study them
Read the detailed description

The goal of this study is to evaluate the effects of learn pork consumption on cognitive and brain health in healthy older adults. Specifically, we seek to evaluate the effects of lean pork consumption on measures of executive function, memory, psychological well-being, and sleep quality. Additionally, we will explore the effects of increased lean pork consumption on measures of brain health derived from structural and functional brain imaging.

The study will consist of two groups of participants: experimental and control. Participants in the experimental group will take part in a 16-week dietary intervention. Throughout the intervention, participants in the experimental group will receive 4 portions of ready-to-eat lean pork in frozen packages each week. Each serving of ready-to-eat lean pork for the experimental group will weigh 5-ounces. Participants in the control group will be asked to continue their regular diet, without receiving any frozen packages of ready-to-eat lean pork. Study compliance will be evaluated through weekly surveys about lean pork consumption.

In addition, all participants will complete pre- and post-intervention assessments:

  • MRI scan, including structural and functional brain imaging
  • a comprehensive questionnaire battery evaluating cognitive and psychological measures
  • neuropsychological tasks
  • a blood draw
Being tested
Ready-to-eat lean pork in frozen, 5-oz packages
Keywords
pork consumption, pork dietary intervention, brain health, cognitive health

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Ready-to-eat lean pork in frozen, 5-oz packagesDietary supplement

    The dietary intervention lasts 16 weeks for each individual. Participants in the experimental group will receive this intervention. Each participant will acquire 4 portions of ready-to eat lean pork in frozen packages per week; each portion of ready-to-eat lean pork in this intervention will weigh 5 ounces.

Study groups in NCT07031076
Study groupRoleWhat they receive
Experimental GroupExperimentalThe experimental group will participate in the 16-week lean pork dietary intervention study. Participants will be provided with 4 portions of ready-to-eat lean pork in frozen packages per week. Each portion of ready-to-eat lean pork provided to this group will weigh 5 ounces.
Receives: Dietary Supplement: Ready-to-eat lean pork in frozen, 5-oz packages
Control GroupNo interventionThe control group will not participate in any dietary intervention, other than being instructed to maintain their regular diet.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. WAIS-V

    Wechsler Adult Intelligence Scale, verison 5. Comprehensive assessment battery for measuring cognitive abilities

    Measured: Baseline and after 16 weeks

  2. Trail Making Test

    Delis-Kaplan Executive Function System test for sequencing and cognitive flexibility

    Measured: Baseline and after 16 weeks

  3. NIH Toolbox (Dimensional Change Card Sort)

    Test for executive function and cognitive flexibility

    Measured: Baseline and after 16 weeks

  4. NIH Toolbox (Flanker)

    test for executive functions: attention and inhibitory control

    Measured: Baseline and after 16 weeks

  5. NIH Toolbox (List Sorting Working Memory Test)

    Test for working memory

    Measured: Baseline and after 16 weeks

  6. Adult Decision-Making Competence test

    Assessment of how well adults make decisions. Subcategories include Resistance to Framing, Recognizing Social Norms, Under/Overconfidence, Applying Decision Rules, Consistency in Risk Perception, and Resistance to Sunk Costs

    Measured: Baseline and after 16 weeks

  7. Cognitive Reflection Test

    Test to measure the ability to suppress an intuitive wrong answer in favor of a more reflective correct answer

    Measured: Baseline and after 16 weeks

  8. Attentional Network Task

    Computerized task to measure the effects of visual and auditory cues on visual processing

    Measured: Baseline and after 16 weeks

  9. UCLA Loneliness Scale

    measure of subjective loneliness and social isolation

    Measured: Baseline and after 16 weeks

  10. Short Form-36 Health Survey

    self-report measure of health status and quality of life

    Measured: Baseline and after 16 weeks

  11. Psychological Wellbeing Scale

    the psychological wellbeing scale assesses six aspects of psychological wellbeing and happiness: Autonomy, Environmental Mastery, Personal Growth, Positive Relations with Others, Purpose in Life, Self-Acceptance

    Measured: Baseline and after 16 weeks

  12. Decision Outcome Inventory

    an assessment of outcomes of real-life decisions

    Measured: Baseline and after 16 weeks

  13. The Mindset Survey

    an assessment to determine whether an individual has a fixed mindset or a growth mindset

    Measured: Baseline and after 16 weeks

  14. Need for Cognition Scale

    assessment of an individual's tendency to engage in and enjoy thinking or mental exertion

    Measured: Baseline and after 16 weeks

  15. Pittsburgh Sleep Quality Index

    Self-report assessment of sleep quality over the past month. The survey includes measures related to Sleep Latency, Sleep Duration, Sleep Efficiency, Sleep Disturbances, Use of Sleep Medications, Daytime Fatigue, and Sleep Quality

    Measured: Baseline and after 16 weeks

  16. Consortium to Establish a Registry for Alzhiemer's Disease Word List Acquisition and Delayed Recall

    A learning and delay memory recall task that is used to quickly assess an individual's mental capacity in memory.

    Measured: Baseline and after 16 weeks

  17. Geriatric Depression Scale

    Assessment of an older adult's status of mental health that screens for depression

    Measured: Baseline and after 16 weeks

  18. Ohio State Traumatic Brain Injury Identification

    Interview-style assessment of past head injuries, including their severity and their resulting symptoms.

    Measured: Baseline and after 16 weeks

  19. Symptom Checklist 90-Revised

    self-report assessment of psychological symptoms related to the domains of somatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid ideation, psychoticism

    Measured: Baseline and after 16 weeks

  20. Grit

    self-report measure of perseverance

    Measured: Baseline and after 16 weeks

  21. Brief Dispositional Resilience Scale

    a 15-item measure of psychological hardiness, covering aspects related to commitment, control, and challenge

    Measured: Baseline and after 16 weeks

  22. Valence Bias Task

    an assessment to measure an individual's tendency to interpret ambiguous stimuli as having a positive or negative valence

    Measured: Baseline and after 16 weeks

Secondary outcomes (1)
  1. Brain Imaging

    • T1- and T2-weighted imaging to visualize the structure of the brain
    • Functional MRI of the whole brain to examine changes in brain activity and functional topology
    • Diffusion tensor imaging to map the white matter structures in the brain
    • Magnetic resonance elastography to examine the elasticity of brain tissues
    • Susceptibility weighted imaging to examine cerebrovascular health

    Measured: Baseline and after 16 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Jun 2025
  2. Study startAug 2025 (estimated)
  3. Primary completionDec 2026 (estimated)
  4. Study completionDec 2026 (estimated)

Why it stopped: The investigative team has transferred to another university.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07031076
Sponsor's protocol ID
23280
Status last verified
Dec 2025
First submitted
12 Jun 2025
Last updated
26 Dec 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Study findings will be submitted to peer-reviewed journals such as those that follow the ICMJE's recommendations for the Conduct, Reporting, Editing and Publication of Scholarly Work in Medical Journals. The data collected during this project may be shared through public-use files, repositories or other means outside of the approved research team as a requirement of publication. All data will be identified with subject IDs only when shared. Research records such as informed consent forms, MRI Safety Screening forms, research compliance records, masterlist linking names to subject IDs will not be shared.

Publications

  • Wade AT, Davis CR, Dyer KA, Hodgson JM, Woodman RJ, Keage HAD, Murphy KJ. A Mediterranean Diet with Fresh, Lean Pork Improves Processing Speed and Mood: Cognitive Findings from the MedPork Randomised Controlled Trial. Nutrients. 2019 Jul 4;11(7):1521. doi: 10.3390/nu11071521.

    PubMed 31277446
  • Hepsomali P, Groeger JA. Diet and general cognitive ability in the UK Biobank dataset. Sci Rep. 2021 Jun 3;11(1):11786. doi: 10.1038/s41598-021-91259-3.

    PubMed 34083695
  • Zhang H, Hardie L, Bawajeeh AO, Cade J. Meat Consumption, Cognitive Function and Disorders: A Systematic Review with Narrative Synthesis and Meta-Analysis. Nutrients. 2020 May 24;12(5):1528. doi: 10.3390/nu12051528.

    PubMed 32456281

Questions about this trial

What is this clinical trial studying?

A study testing Ready-to-eat lean pork in frozen, 5-oz packages in people with Dietary Intervention and Dietary Proteins, run by University of Nebraska Lincoln at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 15 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: withdrawn, as of the sponsor's last update on 26 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

WAIS-V (time frame: Baseline and after 16 weeks). The study lists 22 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07031076, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Dec 2025.

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