Can eating avocado and mango every day help your blood vessels?

You might think adding rich fruits to your meals means gaining weight. But a new study suggests that eating one medium avocado and a cup of fresh mango every day may actually support your heart.

Researchers at the Illinois Institute of Technology tested this combination in 82 adults aged 25 to 60. All participants had prediabetes — a condition where blood sugar levels are elevated but have not yet reached the threshold for type 2 diabetes. They also had overweight or obesity. After just eight weeks, the group eating the fruits showed better blood vessel health compared to a control group eating other carbohydrate foods with similar calories.

What happened to their blood vessels?

The researchers measured how well blood vessels expand when blood flows through them. This flexibility is called flow-mediated dilation, and it shows how healthy the thin inner lining of your arteries is.

In the fruit-eating group, this measurement increased significantly to 6.7%. In the control group, it declined to 4.6%. Men eating the fruits also saw their central blood pressure drop by about 1.9 mmHg, while men in the control group experienced an increase of 5 mmHg.

These improvements happened without any significant changes in body weight or total calorie intake.

"This research reinforces the power of food-first strategies to help reduce cardiovascular disease risk, particularly in vulnerable populations like those with prediabetes," said Britt Burton-Freeman, PhD, Principal Investigator and Professor at the Illinois Institute of Technology. "It’s an encouraging message: small, nutrient-dense additions—like incorporating avocado and mango into meals and snacks—may support heart health without the need for strict rules or major dietary overhauls."

Why might these two fruits work together?

Mango and avocado offer different nutrients that may complement each other:

• Mango provides dietary fiber and vitamin C, an antioxidant that helps protect cells from damage.
• Avocado supplies unsaturated fats, which can support heart health, along with fiber and potassium, a mineral involved in regulating blood pressure.

Participants eating both fruits consumed more fiber, vitamin C, and monounsaturated fat overall. However, the study did not prove whether eating them together is better than eating either fruit alone. Cholesterol levels, blood sugar, and markers of inflammation remained largely unchanged.

Does this mean you should change your diet?

The study lasted only eight weeks, so it remains unclear if these benefits last over months or years. It also focused on a specific group of adults with prediabetes and overweight. Larger studies are needed to see if these changes truly lower the long-term risk of heart attacks or strokes.

Still, the findings suggest that adding nutrient-rich whole fruits to your meals could be a simple way to support your blood vessels, even without losing weight. The bottom line: swapping some everyday carbohydrates for an avocado and a cup of mango may improve blood vessel flexibility in just eight weeks.