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Couscous, a staple in many cuisines, is often praised for its versatility and ease of preparation. However, one aspect that's frequently overlooked is its glycemic index (GI) value, which measures how quickly carbohydrates in a food raise blood sugar levels. While couscous is made from durum wheat semolina, which typically has a high GI, the GI of couscous can vary depending on factors like grain processing and cooking methods. The GI of couscous ranges from medium to high, making it important for individuals managing blood sugar levels to consider portion sizes and pairings to mitigate its impact on glycemic response.¹ This article will delve into the nuances of couscous's glycemic index, its potential effects on blood sugar, and strategies for incorporating it into a balanced diet for optimal health.

Additionally, it's crucial to highlight the potential health benefits of couscous beyond its GI, such as its fiber content, vitamins, and minerals. These nutrients contribute to digestive health, satiety, and overall well-being, which are essential aspects to consider when evaluating couscous's role in a nutritious diet.

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Glycemic Index Table

To calculate the Glycemic Index (GI), Carbohydrate content per serving, and Glycemic Load (GL) per serving of couscous (100g serving size), we need to consider its carbohydrate content and its impact on blood sugar levels. Couscous contains approximately 23.2g of carbohydrates per 100g serving.² The GI of couscous can vary based on factors such as processing and cooking methods. Typically, processed grains like couscous have a higher GI, but factors like the type of wheat used and cooking time can influence the GI. Assuming a moderate GI value of 65 for couscous, we can calculate the Glycemic Load (GL) per serving using the formula: GI x Carbohydrate (g) per serving / 100.¹

Using this information:

1. Glycemic Index (GI): 65 (moderate)

2. Carbohydrate per Serving: 23.2g²

3. GL per Serving: (65 x 23.2) / 100 = 15.08

These calculations indicate that couscous, despite being a source of carbohydrates, falls within a moderate GI range, suggesting that it may moderately affect blood sugar levels. It's important to note that portion sizes, cooking methods, and accompanying foods can influence the overall glycemic response of couscous-based meals, making it essential for individuals managing blood sugar levels to consider these factors.

Glycemic Index


Serving Size


Carbohydrate* per Serving (g)

23.2 g

GL per Serving


Nutritional Facts

Couscous is a grain product made from semolina wheat, typically high in carbohydrates and low in fat. It's a good source of plant-based protein and dietary fiber, providing essential nutrients such as vitamins and minerals, including B vitamins, iron, and magnesium. According to USDA FoodData Central, 100g of cooked couscous contains approximately 23.2g of carbohydrates, 2g of protein, and 0.3g of fat.²

The nutritional information below is for 100 g of cooked couscous.²


378 kcal


23.2 g


2 g


4.4 g


0 mg


C (0 mg)


0 mg

Total Fat

0.3 g

Is Couscous Good for Weight Loss?

Couscous can be a part of a weight loss diet due to its relatively low-calorie content and high fiber content, which can promote feelings of fullness and aid in appetite control. However, portion control is crucial, as couscous is still a source of carbohydrates and calories. Incorporating couscous into meals alongside lean proteins, vegetables, and healthy fats can create balanced, satisfying meals conducive to weight loss. It's important for individuals aiming to lose weight to focus on overall dietary patterns and portion sizes rather than relying solely on specific foods. Consulting with a registered dietitian can provide personalized guidance.

Is Couscous Good for People Living with Diabetes?

Couscous can be included in a diabetic diet, but portion control and mindful pairing with other foods are essential due to their carbohydrate content. While couscous is a source of complex carbohydrates, which can help regulate blood sugar levels more steadily than simple carbohydrates, individuals with diabetes should monitor their portions to avoid spikes in blood sugar. Additionally, pairing couscous with protein, healthy fats, and fiber-rich foods can further help stabilize blood sugar levels. It's advisable for individuals with diabetes to consult with a registered dietitian or healthcare provider for personalized dietary recommendations.

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Couscous is made from semolina wheat, which contains gluten, making it unsuitable for individuals with celiac disease or gluten sensitivity. Allergic reactions to couscous may also occur in individuals with wheat allergies. Symptoms can range from mild gastrointestinal discomfort to more severe allergic reactions. It's crucial for those with wheat-related allergies or intolerances to carefully read food labels and consider alternative grains such as quinoa or rice.

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What is Glycemic Index?

The glycemic index (GI) is a measure of how quickly a carbohydrate-containing food raises blood sugar levels compared to a reference food, usually glucose. It ranks foods on a scale from 0 to 100, with higher values indicating a faster rise in blood sugar. The glycemic index (GI) scale is typically categorized as follows: Low GI [55 or less], Medium GI [56-69], High GI [70 or higher]. Foods with a high glycemic index digest rapidly and can cause dramatic fluctuations in blood glucose or glucose spikes.

What is Glycemic Load?

Glycemic load (GL) takes into account both the quality (glycemic index) and quantity (carbohydrate content) of carbohydrates in a specific serving of food. It is a measure of how much a particular food will raise blood sugar levels. GL is calculated by multiplying the glycemic index of a food by its carbohydrate content and dividing it by 100. It provides a more accurate representation of the overall impact of a food on blood sugar compared to the glycemic index alone.

Does Couscous Spike Insulin?

No, couscous does not spike insulin. Couscous is a type of pasta made from semolina wheat, which is a complex carbohydrate. Complex carbohydrates are digested more slowly by the body, resulting in a gradual release of glucose into the bloodstream. This slow release helps to stabilize blood sugar levels and prevent insulin spikes. However, it's important to note that portion size and the addition of other ingredients can affect the overall impact on blood sugar levels. It's always best to consult with a healthcare professional or registered dietitian for personalized advice.

Is Couscous Low Glycemic?

No, couscous is not considered low glycemic. Couscous is a type of pasta made from semolina wheat, which has a high glycemic index. Foods with a high glycemic index are quickly digested and cause a rapid rise in blood sugar levels. If you are looking for low glycemic options, consider choosing whole grains like quinoa or brown rice instead.

Can People Living with Diabetes Eat Couscous?

Yes, people living with diabetes can eat couscous. Couscous is a grain made from semolina, which is a type of wheat. It is a complex carbohydrate that is low in fat and contains fiber, which can help regulate blood sugar levels. However, it is important for individuals with diabetes to monitor their portion sizes and pair couscous with other nutritious foods to maintain stable blood sugar levels. It is always recommended to consult with a healthcare professional or a registered dietitian for personalized advice on managing diabetes through diet.

Topics discussed in this article:


  1. The University of Sydney. (2023, May 1). Glycemic Index – Glycemic Index Research and GI News
  2. USDA FoodData Central. (2019, April 1). Food Details - couscous, cooked.

About the author

It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.

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About the author

Brittany Barry is a national board-certified health coach and NASM-certified personal trainer based in South Carolina.

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Please note: The Signos team is committed to sharing insightful and actionable health articles that are backed by scientific research, supported by expert reviews, and vetted by experienced health editors. The Signos blog is not intended to diagnose, treat, cure or prevent any disease. If you have or suspect you have a medical problem, promptly contact your professional healthcare provider. Read more about our editorial process and content philosophy here.

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