As National Nutrition Month highlights the role of nutrition in disease prevention, new research points to wild blueberries as a simple food that may support cardiometabolic health.
A team of 12 researchers, including Florida State University nutrition scientist Sarah A. Johnson, associate professor in the Department of Health, Nutrition, and Food Sciences, examined the cardiometabolic effects of wild and highbush blueberries. The findings suggest that wild blueberries may help support vascular function, blood pressure, blood sugar regulation, and gut microbiome activity, all factors closely tied to overall heart and metabolic health.
Wild blueberries, also known as lowbush blueberries, are primarily grown in Maine and Canada. Because of their short shelf life and seasonal harvest, they are most often sold frozen in supermarkets across the United States. Highbush blueberries are the fresh varieties typically found in grocery stores. Both types offer strong nutritional value and can be enjoyed year-round.
Wild blueberries may support cardiometabolic health by improving vascular function, blood pressure, blood sugar regulation, and gut microbiome activity. Researchers say even small dietary changes, such as adding blueberries to daily meals, may produce clinically meaningful health benefits.
A Small Dietary Change With Measurable Impact
Johnson said one of the most notable aspects of the research is the measurable health effect associated with a single food.
“It’s remarkable to see measurable health impacts from a single food rather than a complete dietary overhaul,” Johnson said. “Fruit and vegetable consumption is generally low among consumers, and the research with blueberries demonstrates that even small daily changes consumers can make can have clinically relevant beneficial health impacts. Some of their demonstrated health benefits include those to cardiovascular and heart health and cognitive function.”
Cardiometabolic health is an increasing focus in healthcare as clinicians address the growing prevalence of heart disease, hypertension, diabetes, and metabolic disorders.
The study examined the cardiometabolic health benefits of blueberries, including their potential effects on vascular function, blood pressure, blood sugar, and the gut microbiome.
What the Research Shows About Gut Health
Gut health has become an increasingly important area of research in both medicine and nutrition.
According to Johnson, blueberries contain compounds that interact directly with the gut microbiota.
“Blueberries are rich in dietary fiber as well as polyphenols, which are naturally occurring phytochemicals (i.e., plant chemicals) that interact with and are metabolized by the gut microbiota,” Johnson said.
“Through this interaction, health-promoting metabolites are produced that can be absorbed in the gastrointestinal tract, enter blood circulation, and interact with cells, tissues, and organs. These compounds also serve as a food source for beneficial gut microbes, functioning as prebiotics and supporting overall intestinal health.”
Research to date suggests blueberry consumption may alleviate certain gastrointestinal symptoms and improve markers of gut health, though Johnson noted that more research is still needed.
Easy Ways to Add Blueberries to the Diet
While many dietary recommendations involve complex lifestyle changes, Johnson said blueberries are easy to incorporate into everyday meals.
“Fresh blueberries are delicious on their own, but they’re also incredibly versatile,” Johnson said. “They can be added to yogurt, oatmeal, cereals, and salads, blended into smoothies; incorporated into baked goods; or used in jams, preserves, juices, and sauces; and incorporated into savory dishes such as a topping for pizza.”
Johnson encourages individuals to experiment and find the options that fit best into their daily routine.
As healthcare professionals continue to emphasize prevention and nutrition, the findings add to growing evidence that small dietary changes may support long-term cardiometabolic health.
