RCTHumann = 822026

Effects of Increasing Total Fruit Intake With Avocado and Mango on Endothelial Function and Cardiometabolic Risk Factors in Adults With Prediabetes.

Journal: Journal of the American Heart AssociationPublished: 2026DOI: 10.1161/jaha.124.040933

Plain-language summary

This study looked at whether adding avocado and mango to the diet improves blood vessel function and metabolic health in adults with prediabetes. It was a randomized trial where 82 adults aged 45±15 years with prediabetes were given either a diet including one avocado and one cup of mango daily or a control diet low in fat and fiber for eight weeks. The study found that the avocado-mango diet improved blood vessel dilation and lowered diastolic blood pressure, especially in men, compared to the control diet. It also increased intake of fruit, fiber, vitamin C, and healthy fats.

Key findings

  • The avocado-mango diet improved flow-mediated vasodilation (a measure of blood vessel health) by about 1%, while the control diet saw a decline.
  • Men on the avocado-mango diet had better diastolic blood pressure compared to the control group.
  • Most other metabolic and inflammatory markers did not differ significantly between the two diets.

How to analyze the study yourself

Study type
Randomized controlled trials are strong for testing cause and effect but may not reflect real-world eating habits over longer periods.
Population
Adults with prediabetes, average age 45, average BMI 30 (obese range).
Funding
Not reported
Watch for
This study found that eating avocado and mango daily improved blood vessel function and lowered diastolic blood pressure, especially in men with prediabetes. It may be worth adding these fruits to your diet if you are managing prediabetes.