Soy Milk Glycemic Index (GI) - Is It High or Low?

by Elen Khachatrian | Last updated on August 21, 2024

Medically reviewed by Ani Harutyunyan

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 Australian study's numbers, the glycemic index of soy milk falls between 18 and 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 that contains 3% fat and 120 mg of calcium has a lower glycemic index and 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%) in the range of 17 ± 3. However, soy milk with a reduced fat content (1.5%) and 120 mg calcium have 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).

You can find our glycemic index table with sources by following the link.