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Home Science & Environment

How Mangos Could Be Your Body’s Secret Weapon Against Insulin Resistance todayheadline

March 5, 2025
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For the 650 million adults worldwide living with obesity, finding practical dietary strategies to improve metabolic health remains a persistent challenge. A promising new study published in the journal Nutrients suggests that a delicious tropical fruit might offer unexpected benefits: eating two cups of fresh mango daily appears to significantly improve insulin sensitivity in adults with overweight or obesity and chronic low-grade inflammation.

The research, conducted at the Illinois Institute of Technology’s Center for Nutrition Research, found that participants who consumed mango twice daily for four weeks experienced markedly lower insulin resistance compared to those consuming a calorie-matched control food.

“We’re trying to do something that no one has ever done before,” said one researcher involved in analyzing how dietary interventions might impact metabolic health in at-risk populations.

The randomized, controlled study involved 48 adults aged 20-60 with BMIs over 25 and elevated inflammatory markers. Participants were given either two daily servings of fresh mango (comprising Kent and Keitt varieties) or a calorie-equivalent Italian ice control over a four-week period.

What makes this study notable is its focus on insulin sensitivity rather than just blood glucose levels. By the end of the trial, those in the mango group showed significantly reduced fasting insulin concentrations compared to the control group (8.2 versus 15.3 μIU/mL). More importantly, HOMA-IR values—a key measure of insulin resistance—were substantially lower in the mango group (2.28 versus 4.67).

The disposition index, which indicates how well beta cells compensate for insulin resistance, also showed significant improvement in the mango intervention compared to the control (2.76 versus 5.37).

As Katherine D. Pett, the study’s lead author, and colleagues noted in their published paper, “Collectively, the data suggest that mango intake increased insulin sensitivity in individuals with chronic low-grade inflammation, possibly through activating Nrf-2 genes and increasing cellular antioxidant status.”

This finding contradicts a common misconception about mangos—that their natural sugar content might negatively impact weight or blood sugar management. In fact, participants in the mango group maintained stable body weight throughout the study, while those in the control group experienced a small but significant weight gain of approximately 0.87 kg.

Professor Indika Edirisinghe, corresponding author of the study and researcher at the Center for Nutrition Research, suggests these results add to growing evidence about mango’s potential metabolic benefits. “The data support consuming mango fruit as part of a dietary pattern to address insulin resistance and warrant further research to understand the mechanisms underpinning the actions of mango intake,” the research paper concludes.

The team measured several inflammatory markers throughout the study, including IL-6, TNFα, and high-sensitivity C-reactive protein (hs-CRP). Contrary to their initial hypothesis, they found no significant differences in these inflammation measures between the mango and control groups after four weeks.

However, they did observe an intriguing trend in gene expression analysis. The mango group showed a two-fold increase in nuclear factor erythroid 2-related factor 2 (Nrf2) expression—a gene that regulates cellular antioxidant defense mechanisms. While this increase wasn’t statistically significant, it suggests a potential pathway through which mangos might improve metabolic function.

“These data suggest that regular mango consumption, associated with improved glucoregulation and insulin sensitivity, may be mediated by a mechanism related to improved antioxidant status,” the researchers noted.

One cup of mango provides 100% of the daily value of vitamin C, 35% of vitamin A, and 12% of fiber—all nutrients that could contribute to its metabolic effects. The fruit also contains unique polyphenols and other bioactive compounds that may work synergistically to benefit health.

This isn’t the first study to examine mango’s metabolic benefits. Previous research has shown that mango consumption can lower postprandial glucose and insulin responses compared to calorie-matched controls. Other studies have reported reduced HbA1c levels and improved 2-hour oral glucose tolerance test results following regular mango consumption.

Dr. Britt Burton-Freeman, another author on the study, has previously investigated how whole fruits impact metabolic health differently than their isolated components or sugar equivalents. This research adds to that body of evidence suggesting complex foods like mangos offer benefits beyond their individual nutrient components.

The study was conducted over three years during the COVID-19 pandemic, which researchers acknowledge may have impacted inflammatory marker measurements due to background inflammation from infections or vaccinations among participants. Despite this limitation, the insulin sensitivity findings remained robust.

For consumers concerned about blood sugar management, these findings offer practical implications. Rather than avoiding naturally sweet fruits like mango, incorporating them regularly may actually support metabolic health—particularly as an alternative to processed sweet foods.

The findings align with broader dietary guidance emphasizing whole foods over highly processed alternatives, even when calorie contents are similar. It also reinforces the growing understanding that dietary quality matters as much as quantity for metabolic health.

Looking ahead, the research team plans to investigate the specific compounds in mangos that might be responsible for these effects and explore whether similar benefits occur in different populations, including those with diagnosed diabetes.

For now, this research suggests that enjoying mangos—about one cup twice daily—might be not just a delicious dietary choice but potentially a metabolically advantageous one for those struggling with insulin resistance.

The study was supported through an unrestricted grant from the National Mango Board, though the researchers note the board had no influence over the study design or findings.

As global rates of obesity and diabetes continue rising, finding enjoyable, sustainable dietary approaches to improving insulin sensitivity remains crucial. This research suggests that sometimes, the sweetest solutions might be found in nature’s own offerings.


If you found this piece useful, please consider supporting our work with a small, one-time or monthly donation. Your contribution enables us to continue bringing you accurate, thought-provoking science and medical news that you can trust. Independent reporting takes time, effort, and resources, and your support makes it possible for us to keep exploring the stories that matter to you. Together, we can ensure that important discoveries and developments reach the people who need them most.

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