Is Cassava Good for People With Diabetes?

Cassava, also known as yuca or manioc, is a root vegetable that has lately become trendy in the United States as a health ingredient and gluten-free starch.
It contains relatively little protein and fiber, especially when processed into flour. It may be less healthy for people with diabetes than heartier whole grains.
This ingredient is widely cultivated in tropical and subtropical areas of Africa, Asia, and South America. In the West, it is perhaps best known as the source for tapioca, a starch that can be prepared as a pudding or shaped into the tapioca pearls (boba) that are added to bubble tea.
The starchy roots of this plant are used to make many other foods, too, such as gluten-free flatbreads and pancakes.
Cassava Nutrition
The edible part of the cassava plant is a starchy tuber. It has similar nutritional properties to other root crops, such as potatoes, taro, and yams.
Cassava flour, ground cassava root that has been prepared to remove the toxic compounds, is almost pure carbohydrates: 100 grams of flour contains less than 1 gram each of fat and protein.
Tapioca Nutrition
Tapioca flour is extracted from pressed cassava roots. It has even less nutritional value than cassava flour.
Though tapioca flour doesn’t necessarily include any added sugar, prepared and packaged tapioca products, like tapioca pudding mix, might. Be sure to check the nutrition facts of tapioca products for added sugar.
Otherwise, there is little or no direct evidence that cassava or tapioca products are especially beneficial or harmful for people with diabetes.
Cassava Toxicity
Cassava naturally contains an acid that releases cyanide, a poisonous and potentially fatal substance, when digested. Preparing cassava, typically by peeling, soaking, and cooking, deactivates this ingredient, rendering it safe for human consumption.
Sweeter cassava, which is used for the tapioca flours, puddings, and pearls you can easily find in grocery stores across the United States, is less toxic. However, food manufacturers must still prepare it properly to remove any risk.
The Takeaway
- Cassava is a root vegetable that’s widely consumed in tropical parts of the world. It is the source of tapioca.
- This ingredient, especially when refined into tapioca flour, is almost pure carbohydrates and lacks substantial amounts of protein, fats, and minerals.
- Cassava is poisonous when eaten raw. It should be handled with care when prepared at home.
- Because cassava and tapioca products contain less nutritional value than other whole-grain starches and legumes, it may be best to enjoy them in moderation.
- Cassava Plant Guide. U.S. Department of Agriculture. February 5, 2024.
- Flour, Cassava. U.S. Department of Agriculture FoodData Central. April 20, 2023.
- Mohidin SRNSP et al. Cassava (Manihot esculenta Crantz): A Systematic Review for the Pharmacological Activities, Traditional Uses, Nutritional Values, and Phytochemistry. Journal of Evidence-Based Integrative Medicine. October 11, 2023.
- Finely Ground Tapioca Flour. U.S. Department of Agriculture FoodData Central. November 16, 2023.
- Small Pearl Tapioca. U.S. Department of Agriculture FoodData Central. September 14, 2023.
- Types of Carbohydrates. American Diabetes Association.
- Outbreak of Cyanide Poisoning Caused by Consumption of Cassava Flour — Kasese District, Uganda, September 2017. Centers for Disease Control and Prevention. April 5, 2019.
- Omoniyi SA et al. Cooking Practice and Safety Assessment of Boiled Cassava Root Sold in Streets of Gashua, Yobe State Nigeria. Food Chemistry Advances. June 2024.
- Cyanide. Centers for Disease Control and Prevention. September 6, 2024.

Kayli Anderson, RDN
Medical Reviewer
Kayli Anderson has over a decade of experience in nutrition, culinary education, and lifestyle medicine. She believes that eating well should be simple, pleasurable, and sustainabl...

Joshua Beidler
Author
Joshua Beidler is a registered dietitian nutritionist and nutrition researcher specializing in cardiometabolic health and dietary interventions for chronic disease management. He l...