Researchers studied stroke risk factors in Wisconsin Native American communities and compared them to other Wisconsin residents. They found that Native Americans have higher blood pressure, more diabetes, higher body weight, and more plaque buildup in their neck arteries—all things that increase stroke risk. The study included detailed ultrasound scans of the neck arteries in Oneida Nation participants, showing that over 81% had plaque buildup. These findings suggest that Native American communities face unique health challenges that need targeted prevention programs focusing on weight management, blood sugar control, and blood pressure reduction.
The Quick Take
- What they studied: Whether Native American people in Wisconsin have more stroke risk factors (like high blood pressure, diabetes, and weight problems) compared to other Wisconsin residents
- Who participated: Native American people from Wisconsin (specifically Oneida Nation members) and a matched group of other Wisconsin residents of similar age and gender
- Key finding: Native Americans in the study had significantly higher blood pressure, higher rates of diabetes, higher body weight, and much more plaque buildup in their neck arteries (81.5% had plaque) compared to the general Wisconsin population
- What it means for you: If you’re Native American, understanding these risk factors is important for your health. This research suggests that working with your community on managing weight, controlling blood sugar, and monitoring blood pressure could help prevent strokes. However, this is one study in one region, so talk with your doctor about your personal risk.
The Research Details
This was a cross-sectional study, which means researchers collected health information from two groups of people at one point in time and compared them. They gathered information about Native American participants from Wisconsin and matched them with similar people from the general Wisconsin population based on age and sex. This approach is like taking a snapshot of health conditions rather than following people over time. The researchers collected standard health measurements like height, weight, and blood pressure, plus blood tests to check cholesterol and blood sugar levels. The Native American participants also received special ultrasound scans of their neck arteries to look for plaque buildup, which is a sign of atherosclerosis (hardening of the arteries).
This research approach is important because it allows researchers to identify health differences between groups quickly and efficiently. By comparing Native Americans to a matched general population, the study can show whether Native Americans truly face higher stroke risks or if differences are just due to age or sex variations. The ultrasound scans provide direct visual evidence of artery damage, which is more reliable than just looking at risk factors alone. This type of study is often a first step in understanding health disparities and planning future prevention programs.
This study has several strengths: it was published in a reputable journal (Journal of the American Heart Association), it used objective measurements like ultrasound scans rather than just self-reported information, and it compared groups carefully by matching age and sex. However, the study has limitations: we don’t know the exact number of participants, it only looked at one point in time (not following people over years), and it focused on one Native American nation in one state, so results may not apply to all Native American communities. The study is observational, meaning it shows associations but cannot prove that one factor directly causes another.
What the Results Show
Native American participants had significantly higher systolic and diastolic blood pressure (the top and bottom numbers in a blood pressure reading) compared to matched Wisconsin residents. They also had higher body mass index (BMI), which is a measure of weight relative to height. Rates of diabetes were notably higher in the Native American group. Most striking was the finding that 81.5% of Oneida Nation participants had atherosclerotic plaque visible in their carotid arteries (the major blood vessels in the neck that supply blood to the brain). This is a very high percentage and suggests widespread artery damage in this population. All of these differences were statistically significant, meaning they were unlikely to have occurred by chance.
The study also found higher cholesterol levels, higher hemoglobin A1c (a measure of average blood sugar over time), and higher average glucose levels in the Native American participants. These findings all point to a cluster of related health problems: excess weight, poor blood sugar control, high blood pressure, and damaged arteries. The combination of these factors creates a particularly high risk for stroke and heart disease. The researchers noted a strong relationship between obesity, diabetes, high blood pressure, and atherosclerosis in the Native American group, suggesting these conditions are interconnected.
Previous research has shown that Native American communities face higher rates of stroke and stroke risk factors compared to other U.S. populations. This study confirms and expands on those findings by providing detailed information about a specific Wisconsin Native American community. The high prevalence of carotid artery plaque (81.5%) is notably higher than what is typically seen in general population studies, supporting the idea that Native Americans face disproportionate cardiovascular health challenges. This research aligns with broader health disparities documented in Native American communities related to diabetes, obesity, and heart disease.
The study only looked at people at one point in time, so we can’t tell if stroke risk factors are getting worse or better over time. We don’t know the exact number of participants studied. The study focused on Wisconsin Native Americans, primarily the Oneida Nation, so results may not apply to Native American communities in other regions or other tribes with different genetics, cultures, and environments. The study shows associations between risk factors and artery damage but cannot prove that one directly causes the other. Additionally, the study didn’t examine why these differences exist—whether they’re due to genetics, lifestyle, access to healthcare, or other factors.
The Bottom Line
If you are Native American, especially from Wisconsin, work with your healthcare provider to monitor and manage stroke risk factors. This includes: checking blood pressure regularly (aim for less than 130/80), maintaining a healthy weight through balanced diet and exercise, managing blood sugar if you have diabetes, and avoiding smoking. These recommendations are supported by strong evidence and are appropriate for anyone at high stroke risk. The confidence level is moderate to high for these general recommendations, though individual plans should be personalized with your doctor.
This research is most relevant to Native American communities, particularly those in the Midwest, and healthcare providers serving these communities. It’s also important for public health officials planning prevention programs. However, the findings may have broader relevance since the risk factors studied (high blood pressure, diabetes, obesity) are common across many populations. People of any background with these risk factors should pay attention to stroke prevention. This research should not be used to stereotype any group but rather to identify where targeted health interventions could help.
Changes in blood pressure can occur within weeks of lifestyle modifications. Weight loss typically takes months to show significant results. Blood sugar control improvements may be seen within weeks to months with diet and exercise changes. Reduction in artery plaque buildup takes longer—typically months to years of consistent healthy habits. Stroke risk reduction is a long-term goal that requires sustained effort over years.
Want to Apply This Research?
- Track weekly blood pressure readings, daily steps or exercise minutes, and weekly weight. For those with diabetes, monitor blood sugar levels as recommended by your doctor. Create a simple log showing these four metrics weekly to identify patterns and progress.
- Set a specific, achievable goal such as: ‘I will walk 30 minutes, 5 days per week’ or ‘I will reduce added sugar intake by tracking sugary drinks.’ Use the app to set reminders for blood pressure checks and to log meals to increase awareness of eating patterns. Connect with community resources through the app if available.
- Establish a monthly review routine where you check trends in your tracked metrics. Share your data with your healthcare provider at regular visits. Use the app to set alerts if blood pressure readings consistently exceed your target or if weight increases unexpectedly. Create a long-term goal dashboard showing progress over 3, 6, and 12-month periods.
This research describes health patterns in a specific Native American population and should not be used to make assumptions about any individual’s health. The findings are observational and cannot prove cause-and-effect relationships. If you have concerns about stroke risk, high blood pressure, diabetes, or heart disease, please consult with your healthcare provider for personalized medical advice. This information is educational and not a substitute for professional medical diagnosis or treatment. Always work with your doctor before making significant changes to diet, exercise, or medications.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.