In the context of energy balance and body weight change, approximately how many kilocalories (kcal) are stored in 1 pound (lb) of body fat?

• A. About 3,500 kcal
• B. About 7,000 kcal
• C. About 1,000 kcal
• D. About 2,000 kcal

Answer: (A)

Verified step by step guidance

1. Understand that body fat stores energy in the form of triglycerides, and this energy can be measured in kilocalories (kcal).
2. Recognize that 1 pound (lb) of body fat is commonly estimated to contain a specific amount of stored energy, which is important for calculating energy balance and weight change.
3. Recall or research the standard value used in nutrition science for the energy content of 1 lb of body fat, which is based on biochemical analysis and empirical data.
4. Note that the widely accepted estimate is that 1 lb of body fat stores approximately 3,500 kcal of energy.
5. Use this value to understand how changes in energy intake or expenditure relate to changes in body weight over time.