Which diet is used for weight loss?

• A. Geriatric diet
• B. High-fiber diet
• C. Reduced-calorie diet
• D. Infant and pediatric diets

Answer: (C)

Weight loss comes from creating an energy deficit—consuming fewer calories than the body uses. A reduced-calorie diet is designed to lower daily energy intake while still meeting nutritional needs, often by smaller portions, choosing lower-calorie foods, and tracking intake. In practice, many people aim for a moderate deficit (about 500–1000 fewer calories per day) to achieve roughly 1–2 pounds of fat loss per week, and this plan works best when paired with regular physical activity and healthy lifestyle changes. Other diets are tailored to specific populations or preferences (like older adults or children), or focus on fiber for fullness, but a reduced-calorie approach is the primary strategy used for weight loss.