Definition
The Thermic Effect of Food (TEF), also known as dietary induced thermogenesis, is the energy expended by our bodies in order to consume (bite, chew and swallow) and process (digest, absorb, transport, metabolize and store) food.
Expanded Explanation
The Thermic Effect of Food (TEF) is a critical concept in understanding our body’s metabolic processes. When we consume food, our body expends energy to break down the food, absorb the nutrients, and either utilize them for immediate energy or store them for later use. This energy expenditure, induced by the intake of food, is referred to as the TEF.
Importance
TEF is a crucial component of our daily energy expenditure. It accounts for about 10% of total energy expenditure in most people, though this can vary depending on factors such as the composition of the food and the individual’s own biology. Understanding TEF can help individuals manage their energy balance and weight.
Context and Usage
TEF is often used in the context of nutrition, dietetics, and metabolism studies. It is one of the three components of total daily energy expenditure, alongside resting metabolic rate and physical activity level.
Examples
- Example 1: If you consume a meal that contains 500 calories, your body will use approximately 50 calories (10% of the total) to digest, absorb, and metabolize the nutrients in the meal.
- Example 2: High-protein foods have a higher TEF compared to fats and carbohydrates. This means your body burns more calories processing protein than it does processing the other macronutrients.
Understanding Thermic Effect of Food (TEF)
A common misunderstanding is that consuming foods with a high TEF can lead to weight loss. While it’s true that it requires more energy to process certain foods, this does not mean that eating these foods in excess will result in weight loss. Total caloric intake and expenditure still matter.
Related Glossary Terms
- Basal Metabolic Rate (BMR): This is the amount of energy your body needs to perform basic functions at rest. It is linked to TEF as they both contribute to the total energy expenditure.
- Metabolism: This refers to all the chemical reactions in your body. The TEF is one component of metabolism.
Visual and Reading Aids
External Resources
- Thermic effect of food in humans: methods and results from use of a respiratory chamber
- The Thermic Effect of Food: A Review
Related Articles
- Unleash Energy: How Thermic Effect of Food Protein Transforms Your Diet
- Basal Metabolic Rate: How to Calculate Yours!
