New research reveals mangoes may not spike blood sugar as sharply as commonly assumed

Mangoes are widely enjoyed during summer, eaten raw, blended into shakes, or added to desserts. But given their natural sugar content, many people — particularly those with diabetes — have long questioned whether they cause harmful blood sugar spikes. New research suggests the reality is far more nuanced.

Two new studies examined

Nutrition consultant Sugandha Kehar and Dr Anoop Misra, chairman of the Fortis C-DOC Centre for Excellence for Diabetes, Metabolic Diseases and Endocrinology, shared findings from two research papers they authored, speaking with HT Lifestyle.

The first, published in the European Journal of Clinical Nutrition in September 2025, examined the glycaemic responses to three mango varieties — Safeda, Dasheri, and Langra — in people with and without type 2 diabetes.

The second was an eight-week randomised controlled trial, published in the Journal of Diabetes and Metabolic Disorders in July 2025, comparing the blood sugar impact of two mango varieties against white bread at breakfast.

Key findings

The research produced several encouraging conclusions for mango lovers concerned about their health.

Mangoes did not raise blood sugar more than white bread — and in some cases produced slightly lower glucose responses. In people with type 2 diabetes, blood sugar levels after eating mango were comparable to, or lower than, those seen after eating white bread. Continuous glucose monitoring also revealed smoother glucose patterns throughout the day.

Mango consumption was associated with lower glycaemic variability, meaning fewer sharp rises and crashes in blood sugar — a marker considered beneficial for metabolic control.

In the eight-week trial, participants who replaced refined carbohydrates such as white bread with mango at breakfast showed improvements in fasting blood sugar and HbA1c levels.

Insulin resistance improved, and reductions in body weight, waist circumference, and skinfold thickness were observed. Levels of HDL — commonly referred to as "good" cholesterol — also increased.

Why mangoes behave differently than expected

Mangoes have a moderate glycaemic index and a relatively low glycaemic load. Their fibre content may slow glucose absorption, and they contain bioactive compounds that could support healthy metabolic responses. When eaten as part of a balanced meal, their impact on blood sugar appears less severe than widely assumed.

How to eat mangoes wisely

Dr Misra advised that mangoes need not be avoided entirely. "They should be eaten in controlled portions of about 200 to 250 grams and preferably as part of a meal rather than as a standalone snack," he said.

Kehar added: "It is important to use mango as a replacement for refined carbohydrates, such as white bread, rather than adding it on top of the usual diet."

Both experts strongly advised against pairing mangoes with other high-sugar foods and recommended that individuals monitor their own glucose response, as reactions can vary from person to person.

The overall verdict from the experts was a cautious green light: when consumed in moderation, as part of a balanced diet, and as a substitute for refined carbohydrates, mangoes do not appear to worsen blood sugar levels and may even support better metabolic health in people with type 2 diabetes.