Which statement best identifies a low energy density food?

• A. Oils and fats
• B. Fruits and vegetables
• C. Cheese
• D. Nuts

Answer: (B)

Energy density is calories per gram of food. Foods that are high in water and fiber tend to be low in energy density because water adds weight without calories and fiber adds bulk with few calories. Fruits and vegetables fit this pattern, so they provide fewer calories per gram and allow you to eat a larger volume for the same or fewer calories, aiding fullness and naturally lowering energy intake. In contrast, oils and fats are almost pure fat with about 9 kcal per gram (high energy density), and cheese and nuts have relatively little water and substantial fat, making them energy-dense. That’s why fruits and vegetables are the example of low energy density.