Overview

• Adults with prediabetes who ate fresh mango daily showed lower fasting blood glucose, stable HbA1c, and better insulin sensitivity than those given a low-sugar granola bar.
• Despite roughly 32 grams of natural sugars in mango versus about 11 grams in the bar, the mango group improved glycemic measures over 24 weeks.
• The trial reported gains in fat-free mass and a trend toward lower body fat in the mango group, while controls saw increases in BMI and waist-to-hip ratio.
• The randomized controlled study, led by Raedeh Basiri of George Mason University, enrolled 23 adults and was published in Foods in August 2025.
• Authors disclosed funding from the National Mango Board and stated the funder had no role in the research, with calls for replication before changing dietary guidance.