Mayonnaise Glycemic Index
Low GI · The honest verdict
Gentle on blood sugar
Glycemic index
—
per source
Glycemic load
0
Low GL
This food's glycemic index is —, which is Low GI.
Mayonnaise has essentially no effect on blood glucose because it contains almost no carbohydrate. For people managing blood sugar, mayonnaise's main dietary consideration is its fat and calorie density, not glycemic impact. This is general nutrition information, not medical advice — discuss overall diet composition with your care team.
GI numbers vary by source, ripeness, and how a food is prepared. This is general nutrition information — not medical advice. If you manage diabetes, confirm specifics with your care team.
Key facts
Regular mayonnaise contains essentially 0 g of carbohydrate per tablespoon — it is an oil-and-egg emulsion with no meaningful starch or sugar.
GI testing requires a food to deliver 25–50 g of available carbohydrate in the test portion. Mayonnaise cannot provide this, so no GI value can be reliably measured.
Fat slows gastric emptying and can moderate the glycemic response of an overall meal — adding fat to bread or carbs tends to lower the meal's effective GI.
What's actually inside
Per 100 g, with your typical serving noted as 1 tablespoon (14 g), regular mayonnaise. The carb family is what moves blood sugar — fiber is the number that softens the spike.
Total carbs
0g
Net carbs
0g
total carbs minus fiber
Fiber
0g
slows the glucose rise
- Sugars
- 0g
- Protein
- 0.1g
- Calories
- 94kcal
Notable nutrients
- Total Fat10.3 g
- Saturated Fat1.5 g
- Vitamin E0.9 mg
- Vitamin K5.7 mcg
Is it a smart choice for blood sugar?
GI is only half the story — portion (glycemic load) and what you eat it with decide the real-world effect. Here's the honest read.
The verdict
No direct blood sugar impact — fat-only condiment
Mayonnaise has essentially no effect on blood glucose because it contains almost no carbohydrate. For people managing blood sugar, mayonnaise's main dietary consideration is its fat and calorie density, not glycemic impact. This is general nutrition information, not medical advice — discuss overall diet composition with your care team.
Portion guidance
A tablespoon of regular mayonnaise is 94 calories and is almost pure fat — there is no blood sugar concern with this condiment in typical amounts. The practical dietary consideration is caloric density: mayonnaise is easy to use in large quantities, and a generous spread or a mayo-heavy dressing can add several hundred calories to a meal quickly.
This is general nutrition information, not personal medical advice. Blood sugar responses are individual — if you have diabetes or prediabetes, your care team can tell you how this fits your plan.
How to keep the spike small
The same food can land differently depending on how it's cooked and what it's eaten with. Use these levers to your advantage.
Regular vs. light or reduced-fat mayonnaise
Little effectLight mayo has less fat and slightly more carbohydrates (thickeners replace fat), but the carb addition is still under 2 g per tablespoon — not enough to meaningfully raise blood sugar.
Using mayo in a sandwich with bread
Little effectThe mayo itself contributes no glycemic load to the sandwich. The blood sugar response of the sandwich is driven entirely by the bread and any other carbohydrate-containing fillings.
Flavored or sweet mayonnaise (aioli with honey, sriracha mayo with added sugar)
Raises GISome flavored mayo products add sugar or corn syrup, increasing carb content slightly. Check the label — even sweet aioli varieties are typically under 2 g of sugar per tablespoon.
Pairing tip
Mayo is carb-neutral as a condiment, so it pairs well with virtually any meal without glycemic concern. Use it as a base for protein-rich salads (tuna, egg, chicken) or as a spread to add fat to a sandwich and slow the overall glycemic response of bread. Opt for avocado oil or olive oil mayo for a better unsaturated fat profile.
Why GI numbers vary
Mayonnaise does not have a published GI value because standard GI testing requires a food to provide 25–50 g of available carbohydrate in the test serving — a quantity that regular mayonnaise cannot supply. Any source listing a GI for mayonnaise is either referencing a sweetened or starch-thickened product, or is presenting inaccurate data. Plain mayonnaise is essentially a fat with no glycemic index.
Not medical advice. This page is general nutrition information about Mayonnaise. It isn't a diagnosis or a treatment plan. If you have diabetes, prediabetes, or another condition affecting blood sugar, confirm any dietary decisions with your doctor or care team.
❓Frequently Asked Questions
No — not in any meaningful sense. Regular mayonnaise contains less than 0.5 g of carbohydrate per tablespoon, which is essentially zero. GI measures how carbohydrates raise blood glucose, and mayo has almost none to measure. In typical culinary use, mayonnaise has no direct effect on blood sugar.
Mayonnaise does not have a meaningful GI value. The glycemic index can only be measured for foods that provide at least 25–50 g of available carbohydrate in a test portion, which mayo cannot. Some databases list a low GI for mayonnaise as a placeholder, but this reflects the absence of carbohydrates rather than a measured response. The accurate answer is: GI is essentially not applicable.
From a blood sugar perspective, regular mayonnaise is fine — it contains no meaningful carbohydrates. The dietary considerations for people with diabetes are the same as for anyone: mayo is calorie-dense due to fat (about 94 calories per tablespoon), and some formulations may contain less favorable fats. Using small amounts or avocado/olive oil mayo variants is a sensible approach. Confirm with your care team for individual guidance.
Reduced-fat mayo replaces some fat with water and thickeners (starch, gums), which adds a small amount of carbohydrate — typically 1–2 g per tablespoon. This is still negligible for blood sugar purposes. The main difference between regular and light mayo is calorie count, not glycemic impact.
Yes, indirectly. The fat in mayonnaise slows gastric emptying when consumed with a meal, which can blunt the overall blood glucose spike from the bread and other carbohydrate-containing ingredients. This is a general effect of fat-containing additions to meals, not unique to mayo.
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Reviewed by
Curex Editorial TeamReviewed for accuracy
Last reviewed July 2026