The problem of type 2 diabetes and prediabetes is considerable and growing.

In the United States, more than one in 3 individuals have prediabetes, and as lots of as 8 in 10 grownups do not understand they have it.

Prediabetes is defined by raised blood sugar levels listed below the limit for medical diagnosis of type 2 diabetes and hyperinsulinemia due to insulin resistance.

Individuals with prediabetes are at high danger for type 2 diabetes and most likely to establish and have issues of endothelial dysfunction, causing macrovascular and microvascular illness.

Presently, the most cost‐effective treatment is avoidance and is a significant public health top priority.

In the brand-new research study, Illinois Tech Professor Britt Burton-Freeman and associates asked grownups with prediabetes to follow an Avocado-Mango (AM) diet plan– including one medium Hass avocado and a cup of fresh mango to their everyday meals and treats for 8 weeks.

A calorie-matched control group followed a comparable diet plan, with avocado and mango changed by calorically similar carbohydrate-based foods.

Those on the AM diet plan saw significant enhancements in capillary function, which supports healthy blood circulation, and diastolic high blood pressure, an essential consider long-lasting heart health, compared to the control group.

Capillary function enhanced substantially in individuals on the AM diet plan.

They experienced a considerable boost in flow-mediated dilation (FMD)– a crucial procedure of endothelial function (capillary health)– to 6.7%, compared to a decrease to 4.6% in the control. This recommends a significant enhancement.

Diastolic high blood pressure likewise considerably enhanced, especially amongst guys.

In the control group, guys saw a typical main high blood pressure boost of 5 points (mmHg), while those on the AM diet plan experienced a decrease of about 1.9 points– a distinction that can be scientifically considerable if sustained.

These advantages happened without modifications in calorie consumption or body weight, recommending that nutrient-dense fruits like avocado and mango might support cardiovascular health without significant way of life modifications.

“This research study strengthens the power of food-first techniques to help in reducing heart disease danger, especially in susceptible populations like those with prediabetes,” Professor Burton-Freeman stated.

“It’s a motivating message: little, nutrient-dense additions– like including avocado and mango into meals and treats– might support heart health without the requirement for rigorous guidelines or significant dietary overhauls.”

The AM group likewise saw boosts in fiber, vitamin C, and heart-healthy monounsaturated fat– nutrients connected to cardiovascular health– without modifications in calorie consumption or body weight.

Select kidney function markers, such as approximated glomerular filtering rate (eGFR), likewise enhanced.

While no substantial distinctions were discovered in cholesterol, blood sugar level, or swelling, the findings highlight the worth of including nutrient-rich fruits to the diet plan, specifically for those at threat of type 2 diabetes and heart disease.

“Overall, increasing fruit consumption, particularly avocado and mango consumption, led to vascular function modifications that are very important in cardiovascular health in a population at raised danger for cardiovascular issues,” the authors concluded.

Their paper was released in the Journal of the American Heart Association

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Chelsea Preiss et al2026. Results of Increasing Total Fruit Intake with Avocado and Mango on Endothelial Function and Cardiometabolic Risk Factors in Adults with Prediabetes. Journal of the American Heart Association 15 (4 ); doi: 10.1161/ JAHA.124.040933