Researchers are testing whether traditional Navajo foods can help people with heart failure feel better and stay out of the hospital. The study, called MUTTON-HF, will give some Navajo patients with heart failure specially prepared meals using traditional recipes and local ingredients for 8 weeks, while others receive standard diet advice. Scientists want to see if eating traditional foods that are also chosen for heart health can reduce hospital visits and improve quality of life. This is the first major study to test whether going back to traditional Indigenous foods can help with serious heart problems in Native communities.
The Quick Take
- What they studied: Whether eating traditional Navajo foods that are also good for your heart can help people with heart failure avoid hospital visits and feel better
- Who participated: 204 Navajo (Diné) patients with heart failure who have been to the hospital or emergency room in the past year, split equally between two Indian Health Service clinics
- Key finding: This is a study design paper, not yet completed. Researchers will measure whether patients eating traditional meals have fewer hospital visits in 90 days compared to those getting standard diet advice
- What it means for you: If successful, this could show that returning to traditional foods—which are often healthier and more affordable—might be a powerful way to help Indigenous people with heart problems. Results won’t be available until the study finishes in 2026 or later
The Research Details
This is a randomized controlled trial, which is considered one of the strongest types of medical research. Researchers will randomly assign 204 Navajo patients with heart failure into two groups: one group will receive specially prepared meals using traditional Diné recipes and locally grown or raised foods for 8 weeks, while the other group will receive standard dietary advice. The study will take place at two Indian Health Service clinics and will carefully track which patients go to the hospital or emergency room during the 90 days after starting the program.
The study design is “pragmatic,” which means it’s designed to work in real-world conditions rather than a controlled lab setting. This makes the results more likely to apply to actual patients and communities. Researchers will also measure other important things like quality of life, food security (whether people have enough to eat), and blood markers that show heart health. The study team worked closely with Navajo communities from the beginning to make sure the program fits their culture and values.
This research approach is important because it combines two powerful ideas: using medically tailored meals (meals designed specifically to help with a health condition) and honoring Indigenous food traditions. Many Indigenous communities face food insecurity and poor heart health, and this study tests whether reclaiming traditional foods—which are often more nutritious and culturally meaningful—can actually improve health outcomes. By working with communities from the start, the researchers are more likely to create something that people will actually use and benefit from.
This is a well-designed study published in a top medical journal (Circulation: Heart Failure). The researchers are using blinding, meaning the data analysts won’t know which patients got which treatment until the study ends, which reduces bias. The study includes careful stratification (dividing patients into groups by gender, age, and heart function type) to make sure the groups are fair to compare. However, this is a protocol paper describing the study design, not the actual results yet, so we don’t know the outcomes. The study is registered with ClinicalTrials.gov, which increases transparency and accountability.
What the Results Show
This paper describes the study plan rather than actual results. The main thing researchers will measure is whether patients eating traditional Navajo meals have fewer hospital visits or emergency room visits (for any reason) within 90 days compared to patients getting standard diet advice. They chose this measure because hospital visits are a clear sign that heart failure is getting worse and are very important to patients and their families.
The study will also look at whether traditional meals help specifically with heart failure-related hospital visits, which is more specific than the main measure. Researchers will track these outcomes carefully from the time patients start the program through 90 days later.
Beyond hospital visits, the study will measure several other important outcomes. Researchers will use a special questionnaire called the Kansas City Cardiomyopathy Questionnaire to see if patients feel better and have better quality of life. They’ll also measure food insecurity (whether people have enough healthy food to eat), which is a major problem in many Indigenous communities. The study will check diet quality to see if people are eating better, measure financial strain to understand the economic impact, and look at blood markers that show how well the heart is working. These secondary measures help paint a complete picture of how the program affects people’s lives.
This is the first major study to test whether traditional Indigenous foods can improve heart failure outcomes in Native communities. Previous research has shown that medically tailored meals can help people with heart failure in general populations, and that food insecurity is a major problem affecting heart health in Indigenous communities. This study is innovative because it combines these two ideas and centers Indigenous knowledge and traditions. It recognizes that Indigenous communities have valuable food traditions that were developed over centuries and may offer unique health benefits.
This paper describes the study design, not the results, so we don’t yet know if the program actually works. The study only includes Navajo patients at two specific clinics, so results may not apply to other Indigenous groups or non-Indigenous populations. The study is open-label, meaning both patients and doctors know who is getting the traditional meals versus standard advice, which could influence results (though researchers are blinding the data analysts). The 8-week program is relatively short, so we won’t know about long-term effects. Finally, the study measures hospital visits as the main outcome, which is important but doesn’t capture everything about health and wellbeing.
The Bottom Line
This study hasn’t produced results yet, so no recommendations can be made based on its findings. However, the research design is strong and addresses an important gap in medical knowledge. If you are Navajo or Indigenous and have heart failure, talk with your doctor about participating in MUTTON-HF or similar programs that combine traditional foods with medical care. In general, working with your healthcare team to improve your diet using foods that are culturally meaningful and locally available is a good idea.
This research is most relevant to Navajo (Diné) patients with heart failure, especially those who have been hospitalized or visited the emergency room recently. It’s also important for Indigenous communities more broadly, healthcare providers working with Indigenous populations, and policymakers interested in addressing health disparities. Family members and caregivers of people with heart failure may also find this relevant. This study is not yet applicable to non-Indigenous populations, though the general concept of culturally tailored meals might be valuable for other communities.
The study is currently enrolling patients and is expected to continue through 2026 or later. Results will likely be published 6-12 months after the study ends. If you’re interested in participating or learning about results, you can check ClinicalTrials.gov using the study ID NCT06549699. Don’t expect to see changes in hospital visits overnight—the study measures outcomes over 90 days, which is a realistic timeframe for seeing whether a dietary intervention is working.
Want to Apply This Research?
- Track weekly hospital visits and emergency room visits (yes/no), plus a simple 1-10 quality of life score. Also track whether you’re able to access and prepare traditional foods, and measure food security with a simple question: ‘Did you have enough healthy food this week?’
- Use the app to log daily meals, focusing on traditional or culturally meaningful foods that are also heart-healthy. Set reminders to prepare or obtain traditional ingredients. Track which traditional recipes you try and how you feel after eating them. Share meal photos and recipes with family or community members through the app to build social support.
- Weekly check-ins on food access and meal preparation, monthly reviews of hospital/ER visits, and quarterly assessments of overall quality of life and food security. Use the app to identify patterns—for example, do you feel better on weeks when you eat more traditional foods? Are there barriers to accessing certain ingredients? This long-term tracking helps you and your doctor understand what’s working.
This article describes a research study that is still in progress and has not yet produced results. The findings described are the study design and rationale, not actual outcomes. This information is for educational purposes only and should not be used to make medical decisions. If you have heart failure or are interested in participating in MUTTON-HF or similar programs, please consult with your healthcare provider or cardiologist. Do not change your diet or stop taking heart medications without talking to your doctor first. Results from this study may not apply to all populations or individuals. Always work with your medical team before making significant changes to your diet or treatment plan.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.