Which of the following is a consideration when designing meals for weight maintenance in mixed diets?

• A. Meal timing has no impact
• B. Total daily energy balance doesn't matter
• C. Energy density and meal timing can influence fullness and intake
• D. Only exercise matters

Answer: (C)

Weight maintenance hinges on matching energy intake to energy expenditure, but how full you feel and how much you eat are strongly influenced by two practical levers: energy density and when you eat. Energy density is about calories per gram. Foods with low energy density—think vegetables, soups, fruits, and other high‑volume, low‑calorie options—let you eat a satisfying amount while consuming fewer calories overall. That larger, voluminous intake promotes fullness without pushing calories up, helping you maintain weight on a mixed diet.

Meal timing also matters because when you eat can shape hunger signals and subsequent intake. Regular meals and spreading calories across the day helps prevent extreme hunger, which can lead to overeating later. Tailoring meal timing around activities or long gaps in the day can support better appetite regulation and more consistent energy intake.

So, optimizing both the energy density of foods and the timing of meals provides meaningful influence on fullness and total intake, supporting weight maintenance. It’s not enough to focus on exercise alone, and ignoring how meals are spaced or how filling different foods are would miss key influences on daily energy balance.