Soy milk glycemic index (GI)

by Elen Khachatrian | Last updated on August 23, 2023

Medically reviewed by Jack Yacoubian

Unfortified original and vanilla soy milk contains a low level of sugar and carbs. The sugar amount is equal to 4 g per 100 g, the carbs amount is equal to 6.28g.

Based on the numbers of the Australian study, the glycemic index of soy milk falls in the range of 18-44 (1).

According to The International Tables of Glycemic Index Values, the glycemic index of soy milk that contains 3% fat and no calcium is about 44±5, whereas soy milk which contains 3% fat and 120 mg of calcium has a lower GI, falls in the range of 36±4 (2).

Low-fat (0.7%) soy milk from Australia has a GI of 45±5.

Vitasoy® brand soy milk has the lowest GI, with a reduced fat content (1.5%). The GI is in the range of 17 ± 3. However, soy milk, with a reduced fat content (1.5%) and 120 mg calcium, has a higher GI of 44±3 (2).

According to the study, consuming soy foods and soy milk that are unsweetened improves metabolic blood markers in diabetics and prediabetics. (3,4).

By following the link, you can find our glycemic index table with sources.