Garlic Glycemic Index: Nutritional Facts

Garlic has a glycemic index (GI) of approximately 10, which is considered very low.¹ Foods with a GI of 55 or less are classified as low-GI foods, meaning they cause minimal spikes in blood sugar levels.² Since garlic is typically consumed in small amounts and its carbohydrates are digested slowly, it has a negligible effect on blood glucose. Cooking garlic does not significantly alter its glycemic index, as its carbohydrate composition remains consistent regardless of the preparation method.³

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Glycemic Load (GL) Per Serving

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The glycemic load is calculated using the formula:

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GL = (GI × Carbohydrate per Serving) ÷ 100

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For a 100g serving of garlic with 33.3g of carbohydrates:

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GL = (10 × 33.3) ÷ 100 = 3.33

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Thus, the glycemic load of garlic per 100g serving is approximately 3.33, which is extremely low and further supports its suitability for blood sugar management.¹

Unlike higher GI foods, garlic offers numerous bioactive compounds such as allicin, which may contribute to stabilizing blood sugar levels through mechanisms like improving insulin sensitivity.³ Including garlic in various cooking methods, such as roasting or sautéing, does not significantly impact its glycemic properties but enhances its flavor and antioxidant profile.

Garlic is a nutrient-dense food that provides 167 kcal per 100g serving, making it a calorie-efficient ingredient for enhancing meals.¹ It contains 33.3g of carbohydrates per 100g but is virtually fat-free and cholesterol-free, with no sodium or dietary fiber.² Garlic is an excellent source of calcium, offering 667mg per 100g serving, which supports bone health and metabolic functions.³ It also delivers 80mg of vitamin C, contributing to immune function and skin health. While garlic lacks significant amounts of protein, iron, or other vitamins like B12 or vitamin D, its unique composition of bioactive compounds like allicin enhances its health benefits, such as its potential to support cardiovascular health and blood sugar regulation.⁴

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The nutritional information below is for 100g of garlic.

Garlic can be a beneficial addition to a weight loss diet when consumed as part of a balanced lifestyle. Garlic is low in calories, free of saturated fats, and provides a unique compound called allicin, which has been linked to improved metabolism and fat-burning processes¹. Additionally, its bold flavor can enhance meals without the need for high-calorie additives such as oils or butter, making it a versatile ingredient in low-calorie cooking.

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Some ways to incorporate garlic into a weight-loss diet include:

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• Adding minced garlic to vegetable stir-fries
• Roasting garlic for use as a flavorful spread
• Using garlic to season soups, stews, or marinades
• Including garlic in homemade salad dressings
• Adding raw or cooked garlic to pasta or whole-grain dishes

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Garlic is considered safe and potentially beneficial for people living with diabetes due to its extremely low glycemic index and glycemic load, which means it has a minimal impact on blood sugar levels.² Additionally, studies suggest that garlic may improve insulin sensitivity and help regulate blood glucose levels by enhancing the release of insulin and reducing oxidative stress.³ Garlic’s anti-inflammatory properties may also help prevent complications associated with diabetes, such as cardiovascular disease.⁴

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For people living with diabetes, incorporating garlic into meals is a simple way to enhance flavor without relying on sodium or high-sugar seasonings. However, individuals on blood-thinning medication or with allergies should consult a healthcare provider before increasing garlic intake.⁵

Garlic allergies, though less common, can cause mild to severe allergic reactions in sensitive individuals. Garlic allergy symptoms often include skin irritation, such as redness, itching, or swelling, particularly on the hands after handling raw garlic. In some cases, ingestion can lead to digestive issues, such as nausea or diarrhea, and respiratory symptoms, such as coughing, wheezing, or shortness of breath, particularly in individuals with garlic intolerance or sensitivity.¹ Garlic allergies are typically caused by proteins found in the bulb, which can trigger an immune response. Severe cases may lead to anaphylaxis, a potentially life-threatening reaction requiring immediate medical attention.² If you suspect an allergy, sensitivity, or intolerance to garlic, consult a healthcare professional for proper diagnosis and management.