What does Thermic Effect of Feeding (TEF) estimate?

The correct choice accurately defines the Thermic Effect of Feeding (TEF) as the energy expended to digest and store nutrients. TEF refers to the increase in metabolic rate that occurs after eating, as the body utilizes energy to break down food, absorb nutrients, and convert these nutrients into usable forms. This process involves several physiological reactions, including enzymatic activity, absorption through the gastrointestinal tract, and transportation of nutrients in the body.

TEF can account for approximately 10% of daily energy expenditure, varying by the type and composition of the food consumed. For example, protein has a higher thermic effect compared to carbohydrates and fats, meaning it requires more energy to process. Understanding TEF is essential for creating effective weight management strategies, as it contributes to the overall caloric balance in the body and can influence how dietary choices affect weight loss or maintenance.