AzTrials
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Cognitive DeclineMINDNCT02817074

MIND Diet Intervention and Cognitive Decline

A study testing MIND Diet and Mild Weight Loss in people with Cognitive Decline and Dementia, run by Rush University Medical Center at 2 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Phase III randomized controlled trial designed to test the effects of a 3-year intervention of the MIND diet (Mediterranean-DASH Intervention for Neurodegenerative Delay) on cognitive decline and brain neurodegeneration among 600 individuals 65+ years without cognitive impairment who are overweight and have suboptimal… Read more about this study

Who is it for?
Ages 65 to 84 yearsHealthy volunteers can take part
Conditions the study is for
Cognitive Decline, Dementia, Alzheimer Disease
What is being tested?
MIND Diet and Mild Weight Loss
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
604 participants
Where
2 sitesUnited States
Study dates
Jan 2017to 30 Jun 2021
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 84 years
  • All sexes
  • Healthy volunteers accepted
  • Older adult

Who may be able to join

  • family history of dementia
  • BMI >=25
  • suboptimal diet

Who cannot join

  • heavy alcohol use
  • severe illness
  • cognitively impaired
  • psychiatric illness

Trial locations and contacts

2 sites in 1 country.

United States2 sites
  • Harvard School of Public Health

    Boston, Massachusetts, 02115

  • Rush University

    Chicago, Illinois, 60612

Other trials in United States

About this study

Official title: MIND Diet Intervention to Prevent Alzheimer's Disease

Phase III randomized controlled trial designed to test the effects of a 3-year intervention of the MIND diet (Mediterranean-DASH Intervention for Neurodegenerative Delay) on cognitive decline and brain neurodegeneration among 600 individuals 65+ years without cognitive impairment who are overweight and have suboptimal diets.

Read the detailed description

Mediterranean-DASH Diet Intervention for Neurodegenerative Delay (MIND) is a Phase III randomized controlled trial designed to test the effects of a 3-year intervention of a hybrid of the Mediterranean and DASH diets, called MIND, on cognitive decline among 600 individuals 65+ years without cognitive impairment who are overweight and have suboptimal diets. The proposed MIND diet is a hybrid of the Mediterranean and DASH diets but with selected modifications based on the most compelling evidence in the diet-dementia field. The MIND diet has the same basic components of the DASH and Mediterranean diets, such as emphasis on natural plant-based foods and limited animal and high saturated fat foods, but uniquely specifies green leafy vegetables and berries as well as food component servings that reflect the nutrition-dementia evidence. The trial will employ a parallel group design comparing the effects on cognitive outcomes of the MIND intervention diet plus mild caloric restriction for weight loss to the control diet, usual diet with mild caloric restriction for weight loss. Biological effects of the MIND diet will be assessed by measurement of brain macro- and micro-structural integrity in 300 randomly selected participants. Other biochemical markers will be assessed in the entire cohort of 600 participants, including: plasma Abeta 42/Abeta 40, brain-derived neurotrophic factor (BDNF) and plasma markers of oxidative stress and inflammation. In addition, the trial will examine potential effect mediators and modifiers by a number of cardiovascular risk factors, AD biomarkers, and biological mechanisms. The proposed study has two clinical sites, one in Chicago (Rush University) and one in Boston (Harvard University), and centralized laboratories for data coordinating and analyses (Brigham \& Women's Hospital), neuroimaging analyses (Rush University), and specialized laboratories for tissue biochemical analyses.

Being tested
MIND Diet, Mild Weight Loss
Medical subject headings
Cognitive Dysfunction, Dementia, Alzheimer Disease, Dementia, Vascular

What participants receive

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

  • MIND DietBehavioural

    3-year dietary counseling to adhere to the MIND diet and for mild weight loss

  • Mild Weight LossBehavioural

    3-year dietary counseling to reduce calorie intake by 250 kcal/day for mild weight loss

Study groups in NCT02817074
Study groupRoleWhat they receive
MIND Diet +Weight lossActive comparator3-year intervention of dietary counseling to adhere to the MIND diet plus reduce calorie intake by 250 kcal /day for mild weight loss
Receives: Behavioral: MIND Diet; Behavioral: Mild Weight Loss
Usual Diet + Weight LossPlacebo comparator3-year intervention of usual diet + counseling to reduce calorie intake by 250 kcal/day for mild weight loss
Receives: Behavioral: Mild Weight Loss

What is being measured

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

  1. Change in global cognitive function (composite score)

    Global cognitive function assessment is based on a battery of 12 cognitive tests [1. Word list Memory; 2. Word List Recall; 3. Word List Recognition; 4. Logical Memory (East Boston Story Immediate Recall); 5. Logical Memory (East Boston Story Delayed Recall); 6. Verbal Fluency; 7. Multilingual Naming Test; 8. Trail A; 9. Trail B; 10. Flanker Inhibitory Control; 11. Oral Symbol Digit Modalities Test; and 12. Pattern Comparison. Individual test scores will be summarized by calculating the z-score for each test based on the mean and standard deviation of the sample distribution - averaging z-scores across tests will yield a composite score for global cognitive function. Cognitive function will be assessed at the baseline, 6, 12, 24, and 36 months to determine the time-course of cognitive change.

    Measured: 3 years

  2. Change in specific cognitive domains

    Change in specific cognitive domains: episodic memory, semantic memory, perceptual speed, and executive function

    Measured: 3 years

Secondary outcomes (1)
  1. Change in brain MRI total brain /intracranial volume (cubic centimeters) and hippocampal/intracranial volume (cubic centimeters)

    Changes in brain MRI-derived normalized measures of total brain volume (cubic centimeters) and hippocampal volume (cubic centimeters) and white/gray matter, segmented gray matter regions, white matter lesions, and thickness of segmented cortical regions.

    Measured: 3 years

Timeline

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

  1. First posted29 Jun 2016 (estimated)
  2. Study startJan 2017
  3. Primary completion30 Jun 2021
  4. Study completion30 Jun 2021

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
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
604 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02817074
Sponsor's protocol ID
R01AG051641
Other IDs
1R01AG052583-01
Acronym
MIND
Status last verified
Mar 2022
First submitted
23 Jun 2016
Last updated
23 Mar 2022
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Electronic data will be made available after trial completion

Publications

  • Morris MC, Tangney CC, Wang Y, Sacks FM, Barnes LL, Bennett DA, Aggarwal NT. MIND diet slows cognitive decline with aging. Alzheimers Dement. 2015 Sep;11(9):1015-22. doi: 10.1016/j.jalz.2015.04.011. Epub 2015 Jun 15.

    PubMed 26086182
  • Morris MC, Tangney CC, Wang Y, Sacks FM, Bennett DA, Aggarwal NT. MIND diet associated with reduced incidence of Alzheimer's disease. Alzheimers Dement. 2015 Sep;11(9):1007-14. doi: 10.1016/j.jalz.2014.11.009. Epub 2015 Feb 11.

    PubMed 25681666
  • Dhana K, Aggarwal NT, Ventrelle J, Voigt RM, Liu X, Agarwal P, Tangney C, Arfanakis K, Sacks FM, Barnes LL. Adherence to the Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet and longitudinal changes in global cognition: a post hoc analysis of the MIND trial. Am J Clin Nutr. 2026 Jul 15;124(3):101433. doi: 10.1016/j.ajcnut.2026.101433. Online ahead of print.

    PubMed 42457038
  • Dhana K, Aggarwal NT, Arfanakis K, Sacks FM, Barnes LL. Dietary intervention and cognition across Alzheimer's disease biomarker levels: The MIND clinical trial. J Alzheimers Dis. 2026 Jun;111(3):1301-1308. doi: 10.1177/13872877261442856. Epub 2026 Apr 25.

    PubMed 42033408
  • Halloway S, Aggarwal NT, Arfanakis K, Sacks FM, Barnes LL, Dhana K. Effect modifiers of the MIND diet for cognition in older adults: The MIND diet trial. Alzheimers Dement. 2025 Oct;21(10):e70731. doi: 10.1002/alz.70731.

    PubMed 41058007
  • Dhana K, Aggarwal NT, Voigt RM, Ventrelle J, Rajan KB, Kaddurah-Daouk R, Marcovina SM, Liu X, Agarwal P, Tangney C, Arfanakis K, Sacks FM, Barnes LL. Effect of weight loss through dietary interventions on cardiometabolic health in older adults. Int J Obes (Lond). 2025 Dec;49(12):2503-2510. doi: 10.1038/s41366-025-01902-6. Epub 2025 Oct 3.

    PubMed 41044190
  • Liu X, Sacks FM, Beck T, Tangney CC, Willett WC, Yassine H, Dhana K, Aggarwal NT, Rajan KB, Barnes LL. Apolipoprotein E epsilon4-dependent associations between carotenoids and cognitive decline: Findings from the MIND (Mediterranean-DASH Intervention for Neurodegenerative delay) randomized controlled trial. Am J Clin Nutr. 2025 Nov;122(5):1289-1297. doi: 10.1016/j.ajcnut.2025.08.012. Epub 2025 Aug 27.

    PubMed 40876538
  • Barnes LL, Dhana K, Liu X, Carey VJ, Ventrelle J, Johnson K, Hollings CS, Bishop L, Laranjo N, Stubbs BJ, Reilly X, Agarwal P, Zhang S, Grodstein F, Tangney CC, Holland TM, Aggarwal NT, Arfanakis K, Morris MC, Sacks FM. Trial of the MIND Diet for Prevention of Cognitive Decline in Older Persons. N Engl J Med. 2023 Aug 17;389(7):602-611. doi: 10.1056/NEJMoa2302368. Epub 2023 Jul 18.

    PubMed 37466280
  • Liu X, Dhana K, Furtado JD, Agarwal P, Aggarwal NT, Tangney C, Laranjo N, Carey V, Barnes LL, Sacks FM. Higher circulating alpha-carotene was associated with better cognitive function: an evaluation among the MIND trial participants. J Nutr Sci. 2021 Aug 16;10:e64. doi: 10.1017/jns.2021.56. eCollection 2021.

    PubMed 34527222
  • Lefevre-Arbogast S, Dhana K, Aggarwal NT, Zhang S, Agarwal P, Liu X, Laranjo N, Carey V, Sacks F, Barnes LL, Arfanakis K. Vitamin D Intake and Brain Cortical Thickness in Community-Dwelling Overweight Older Adults: A Cross-Sectional Study. J Nutr. 2021 Sep 4;151(9):2760-2767. doi: 10.1093/jn/nxab168.

    PubMed 34113981
  • Halloway S, Dhana K, Desai P, Agarwal P, Holland T, Aggarwal NT, Evers J, Sacks FM, Carey VJ, Barnes LL. Free-Living Standing Activity as Assessed by Seismic Accelerometers and Cognitive Function in Community-Dwelling Older Adults: The MIND Trial. J Gerontol A Biol Sci Med Sci. 2021 Oct 13;76(11):1981-1987. doi: 10.1093/gerona/glab106.

    PubMed 33835152
  • Liu X, Morris MC, Dhana K, Ventrelle J, Johnson K, Bishop L, Hollings CS, Boulin A, Laranjo N, Stubbs BJ, Reilly X, Carey VJ, Wang Y, Furtado JD, Marcovina SM, Tangney C, Aggarwal NT, Arfanakis K, Sacks FM, Barnes LL. Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) study: Rationale, design and baseline characteristics of a randomized control trial of the MIND diet on cognitive decline. Contemp Clin Trials. 2021 Mar;102:106270. doi: 10.1016/j.cct.2021.106270. Epub 2021 Jan 9.

    PubMed 33434704

Questions about this trial

What is this clinical trial studying?

A study testing MIND Diet and Mild Weight Loss in people with Cognitive Decline and Dementia, run by Rush University Medical Center at 2 sites 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 3 inclusion and 4 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: finished, as of the sponsor's last update on 23 Mar 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites 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. Some participants in this study may receive a placebo. 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 is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Change in global cognitive function (composite score) (time frame: 3 years). The study lists 2 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 NCT02817074, which also lists 12 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 23 Mar 2022.

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