2 foods

Glycemic index of oils & fats

Oils and fats contain no carbohydrate and have no GI. Adding fat to a carbohydrate food lowers its GI by slowing stomach emptying, but it also adds calories.

			Serving	Level
Butterunsalted butter	—	<1	10 g	None
Olive oilextra virgin olive oil	—	<1	10 g	None

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Other categories

Fruits25 foods Vegetables & tubers32 foods Grains & rice20 foods Bread & bakery17 foods Pasta & noodles10 foods Breakfast cereals7 foods Legumes13 foods Dairy & plant milks9 foods Nuts & seeds8 foods Snacks & crackers8 foods Sweets & desserts18 foods Sugars & sweeteners8 foods Drinks11 foods Dishes8 foods Meat, fish & eggs8 foods

Sources: Atkinson FS et al. International tables of glycemic index and glycemic load values 2021. Am J Clin Nutr. 2021;114(5):1625–1632 · USDA FoodData Central · Methodology & sources · Data last reviewed 2026-09-29.