To calculate the glycemic index (GI), carbohydrate content, and glycemic load (GL) per serving of whole wheat bread (100g), we'll utilize data from the USDA FoodData Central and relevant formulas.

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1. Glycemic Index (GI): The glycemic index measures how quickly a carbohydrate-containing food raises blood glucose levels. Whole wheat bread typically has a glycemic index ranging from 51 to 69.² Cooking methods and variations in ingredients can influence the glycemic index, with factors like processing, fiber content, and protein affecting the rate of carbohydrate absorption.

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2. Carbohydrate per Serving (g): According to the USDA FoodData Central, the carbohydrate content of whole wheat bread is approximately 49.7 grams per 100 grams.¹

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3. Glycemic Load (GL) per Serving: Glycemic load takes into account both the glycemic index and the carbohydrate content of a serving of food. The formula to calculate GL is GL = (GI × Carbohydrate per Serving) / 100. Using the average GI value of 60 (the midpoint of the typical range for whole wheat bread) and the carbohydrate content (49.7 grams), we can calculate the glycemic load: GL = (60 × 49.7) / 100 ≈ 29.82

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Therefore, the glycemic load per serving of whole wheat bread (100g) is approximately 29.82.

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Understanding these values is essential for individuals aiming to manage blood sugar levels or make informed dietary choices. Incorporating whole wheat bread, with its moderate glycemic index and beneficial nutrients like fiber and vitamins, into a balanced diet can contribute to overall health and well-being.

Whole wheat bread is a nutritious choice, providing essential nutrients such as fiber, protein, vitamins, and minerals. According to the USDA FoodData Central, per 100 grams, whole wheat bread typically contains approximately 8.5 grams of protein, 2.4 grams of fiber, and significant amounts of B vitamins like folate and thiamine.¹ Additionally, whole wheat bread is a good source of complex carbohydrates, which can contribute to sustained energy levels and promote overall health and well-being.

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The nutritional information below is for 100 g of whole wheat bread.¹

Whole wheat bread can be a beneficial component of a weight loss diet due to its high fiber content and lower glycemic index compared to refined grains. Fiber helps promote satiety, which can lead to reduced calorie intake and support weight loss efforts.¹ 

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Additionally, whole wheat bread provides essential nutrients while being lower in calories and fat compared to many other bread varieties, making it a nutritious and filling option for those looking to manage their weight.¹ However, it's essential to consider portion sizes and overall dietary balance as part of a comprehensive weight loss plan.

Whole wheat bread can be a safe and beneficial option for individuals with diabetes due to its lower glycemic index compared to refined grains. The slower release of glucose into the bloodstream from whole wheat bread may help manage blood sugar levels more effectively.² 

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Additionally, the fiber content in whole wheat bread can promote satiety, aid in weight management, and improve digestive health, all of which are important considerations for individuals with diabetes.² However, portion control and overall carbohydrate intake should still be monitored as part of a balanced diet and in consultation with a healthcare provider.

Allergic reactions to whole wheat bread can range from mild to severe and may include symptoms like hives, itching, swelling, difficulty breathing, or even anaphylaxis in rare cases. Wheat allergy is one of the most common food allergies, particularly in children, and can be triggered by specific proteins found in wheat grains. 

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Individuals with known wheat allergies should carefully read ingredient labels and consider alternatives to whole wheat bread to avoid allergic reactions and ensure their nutritional needs are met.