Diet-Induced Thermogenesis

Definition

Diet-Induced Thermogenesis (DIT), also known as the Thermic Effect of Food (TEF), is the amount of energy expended by the body to digest, absorb and metabolize food. It refers to the increase in metabolic rate that occurs after eating, in response to the caloric content and macronutrient composition of the meal.

Examples

Protein-rich foods have a higher DIT compared to fat or carbohydrate-rich foods. For example, if you consume a 100-calorie meal containing 25 grams of protein, your body will burn about 25 calories during digestion and absorption, resulting in a net calorie intake of 75 calories. On the other hand, if you consume a 100-calorie meal containing 25 grams of fat, your body will only burn about 3 calories during digestion and absorption, resulting in a net calorie intake of 97 calories.

Synonyms

• Thermic Effect of Food
• Specific Dynamic Action
• Specific Dynamic Effect

Related Terms

• Basal Metabolic Rate (BMR)
• Metabolism
• Calorie
• Macronutrient

Conclusion

Understanding Diet-Induced Thermogenesis is important for weight loss and management, as it can influence the number of calories consumed versus expended. Consuming a high-protein diet and spreading meals throughout the day may increase DIT and overall calorie expenditure. However, it is important to note that the effects of DIT are relatively small compared to other factors affecting weight loss, such as calorie intake, exercise, and genetics.