Benefits
Insulin sensitivity markers with two cups of mango a day
In a randomized, single-blinded trial in 48 adults with overweight or obesity and raised CRP, two 1-cup servings of mango a day for 4 weeks gave lower fasting insulin and a better insulin-resistance score (HOMA-IR) than an energy- and sugar-matched Italian ice. Fasting glucose and inflammation markers did not differ. The National Mango Board funded the trial.
Blood sugar and insulin after a mango snack compared with low-fat cookies
In a randomized crossover test in 23 adults with overweight or obesity, a 100 kcal snack of fresh mango raised blood glucose at 30 minutes and insulin at 45 minutes less than 100 kcal of low-fat cookies. This was a single-snack test comparing mango with a refined snack, not a measure of long-term blood sugar control.
Blood sugar over 12 weeks of daily fresh mango
In a crossover trial in 27 adults with overweight or obesity, 100 kcal of fresh mango a day for 12 weeks was followed by lower blood glucose and CRP, with no change in weight, insulin or lipids, while 12 weeks of low-fat cookies raised weight, insulin, CRP and triglycerides. The abstract reports the changes within each period. An earlier study with no control group also saw a small drop in fasting glucose.
Stool frequency and form compared with an equal amount of fiber
In a randomized trial in otherwise healthy adults with chronic constipation, 300 g of mango a day for 4 weeks improved stool frequency, consistency and shape, and the authors report the improvement went beyond an equal amount of fiber. Plasma endotoxin and IL-6 fell. The abstract gives no participant numbers, and the trial was small and listed the National Mango Board among its funders.
Gut microbiome diversity compared with a calorie-matched snack
In a 12-week crossover trial in 27 adults with overweight or obesity, 100 kcal of fresh mango a day gave higher gut bacterial diversity scores (Shannon and Simpson) than low-fat cookies at week 4 and a different bacterial mix at week 12, though bacterial richness scores were higher with the cookies. Bowel movement frequency, consistency, straining and gut-permeability blood proteins did not differ between the two snacks.
Fullness and hunger ratings after eating mango
After a 100 kcal mango snack, adults with overweight or obesity reported less hunger and more fullness than after low-fat cookies. In 18 healthy young adults, adding mango to a cornflake breakfast raised fullness ratings, but they did not eat fewer calories at a snack 2 hours later.
A whole-food source of vitamin C and beta-carotene
By USDA figures, 100 g of raw mango provides about 36 mg of vitamin C, 640 mcg of beta-carotene (54 mcg vitamin A as RAE), 43 mcg of folate and 1.6 g of fiber for about 60 kcal. These are composition values for the food, not trial outcomes.
Mechanism of action
Fiber and a whole-fruit matrix
A fruit serving brings fiber, water and bulk along with its sugar. In trials that compared mango with low-fat cookies or an Italian ice of equal calories, mango gave a smaller glucose or insulin response, and added mango did not raise a breakfast glucose spike the way added sugar did, which fits a food-matrix effect. Which part of the fruit drives this has not been tested in people.
Enzyme and antioxidant pathways seen in lab and animal work
A systematic review of animal and human studies on mango flesh, leaf, peel, bark and kernel lists proposed mechanisms that include blocking the starch-digesting enzymes alpha-amylase and alpha-glucosidase, better antioxidant status and changes in insulin-signaling genes. These come mainly from lab and animal work, often with leaf or peel extracts rather than the edible fruit.
Gut bacteria and fermentation products
Mango fiber and polyphenols reach the colon, where bacteria ferment them. In human trials, mango shifted gut bacterial diversity and raised fecal valeric acid, a short-chain fatty acid. Whether these shifts cause the changes in bowel habits or blood markers has not been shown.
Clinical trials
Randomized, placebo-controlled, single-blinded, parallel-group trial; two 100 kcal cups of Kent and Keitt mango a day versus an Italian ice matched for calories and sugar, for 4 weeks, with a 2-hour oral glucose tolerance test before and after; funded by the National Mango Board. (Pett et al. 2025, Nutrients)
48 adults who completed the study (mean age about 38, mean BMI about 30.5) with overweight or obesity, chronic low-grade inflammation (raised hs-CRP) and fasting glucose above 100 and below 126 mg/dL.
Fasting glucose did not differ between groups. Fasting insulin was lower with mango than control (8.2 vs 15.3 uIU/mL, p = 0.05), and HOMA-IR (2.28 vs 4.67, p = 0.03) and the disposition index were better. Inflammation markers (IL-6, TNF-alpha, hs-CRP) did not differ. Three authors reported research grants from the National Mango Board.
Randomized crossover test of one 100 kcal snack of fresh mango versus 100 kcal of low-fat cookies on two occasions, with glucose measured for 2 hours and satiety rated every 20 minutes; registered as NCT03957928, the same trial whose companion gut paper reports National Mango Board support. (Pinneo et al. 2022, J Med Food)
23 healthy men and women with overweight or obesity.
Glucose rose at 30 minutes after both snacks, but significantly less after mango, and the insulin rise at 45 minutes was significantly lower after mango. Cholecystokinin rose after both with no difference. Mango reduced hunger and increased fullness. A single-snack comparison with a refined cookie, not a long-term trial.
Crossover trial of 100 kcal a day of fresh mango or low-fat cookies for 12 weeks each, separated by a 4-week washout; registered as NCT03957928. A companion paper from the same registered trial reports support from the National Mango Board. (Rosas et al. 2022, Nutr Metab Cardiovasc Dis)
27 adults with overweight or obesity (BMI 26 or higher).
After the mango period, blood glucose, CRP and the liver enzyme AST were lower and total antioxidant capacity was higher, with no change in body weight, body fat, blood pressure, insulin or lipids. After the cookie period, body weight, insulin, CRP and triglycerides rose. The abstract reports changes within each period rather than a direct between-treatment test for each marker.
Randomized trial of 300 g of mango a day versus an equivalent amount of fiber for 4 weeks, with digestive-wellness questionnaires and blood and stool samples; described by the authors as a pilot study. Europe PMC lists the National Mango Board among its funders. (Venancio et al. 2018, Mol Nutr Food Res)
Otherwise healthy adults with chronic constipation; the abstract does not give participant numbers.
The authors report that mango improved stool frequency, consistency and shape, raised gastrin and fecal valeric acid, and lowered plasma endotoxin and IL-6, and conclude that these improvements went beyond an equivalent amount of fiber. The abstract does not report between-group statistics, and the authors called for larger follow-up studies.
12-week crossover trial of 100 kcal a day of fresh mango or low-fat cookies with a 4-week washout, analyzing the gut microbiome, blood gut-permeability proteins and bowel habit questionnaires; supported by the National Mango Board. (Asuncion et al. 2023, Food Sci Nutr)
27 adults with overweight or obesity.
Shannon and Simpson diversity indices were higher with mango than with cookies at week 4, while the richness indices Chao1 (weeks 4 and 12) and ACE (week 12) were higher with cookies, and beta diversity differed between the two at week 12. Gut-permeability proteins (ZO-1, claudin-2, occludin) did not differ. Estimated stool amount rose slightly from baseline within the mango period, but frequency, consistency, straining, pain and constipation scores did not differ between treatments.
Single-arm study of 10 g a day of ground freeze-dried mango pulp for 12 weeks, measured before and after with no comparison group; supported by Oklahoma State University and a National Mango Board grant. (Evans et al. 2014, Nutr Metab Insights)
20 adults with obesity aged 20 to 50 (11 men, 9 women).
Fasting blood glucose fell by 4.45 mg/dL in men and 3.56 mg/dL in women, and hip circumference fell in men only. Body weight and body composition did not change. Without a control group, these changes cannot be credited to mango. A second report of 20 adults on the same regimen from the same group found no change in inflammatory markers, lipids or body measures.
Randomized two-group parallel study of 85 g or 250 g of Ataulfo mango a day for 16 weeks, with no group that ate no mango; supported in part by the National Mango Board, which also supplied the mangos. (Fam et al. 2020, Nutrients)
36 healthy postmenopausal women with fair skin (Fitzpatrick type II or III) were enrolled and 32 completed.
Deep wrinkle severity fell from baseline in the 85 g group at weeks 8 and 16, but cheek redness rose. In the 250 g group, average, fine and emerging wrinkle severity and wrinkle length increased over 16 weeks. The two doses pointed in opposite directions, and there was no non-mango comparison.