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Peanut butter glycemic index (GI)

Article author photo Victoria Mazmanyan by Victoria Mazmanyan | Last updated on September 20, 2023
Medically reviewed by Jack Yacoubian Article author photo Jack  Yacoubian

Based on the numbers by The American Journal of Clinical Nutrition, the glycemic index of peanut butter is 14 (1).

Salted and roasted peanuts also have a glycemic index of 14, so turning them into a paste doesn’t affect the GI.

The International Tables of Glycemic Index has calculated the glycemic index of white, wholemeal wheat bread with peanut butter to be 51 or 67, depending on the bread and peanut butter (2).

Another research has indicated that supplementation with two tablespoons of peanut butter to a high glycemic index meal reduces the magnitude of blood glucose spikes and overall glycemic response (3).

The very low glycemic response and the potential beneficial effects on blood glucose levels make peanut butter an advisable food choice for people with diabetes. However, it is necessary to consider the high caloric profile of peanut butter.


Article author photo Victoria Mazmanyan
Education: General Medicine at YSMU
Last updated: September 20, 2023
Medically reviewed by Jack Yacoubian

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Data provided by should be considered and used as information only. Please consult your physician before beginning any diet.