Energy Density
Energy density is the number of calories per gram of food — choosing lower-density foods helps you feel full while controlling calorie intake.
Plain English
Patient-Friendly Explanation
Energy density refers to the number of calories in a given weight of food, usually measured as calories per gram. Foods with high water and fibre content — like fruits, vegetables, and soups — have low energy density, meaning you can eat a satisfying portion for fewer calories. Choosing more low-energy-density foods is one of the most effective strategies for weight management.
Medical
Clinical Definition
Energy density is calculated as kilocalories per gram (kcal/g) of food. Low-energy-density foods (0-0.6 kcal/g) include most fruits and non-starchy vegetables; medium-density (0.6-1.5 kcal/g) includes whole grains, legumes, and lean proteins; high-density foods (>4.0 kcal/g) include oils, butter, nuts, and processed snacks. The volumetrics approach to weight management is based on this principle: reducing dietary energy density enables larger, more satiating portions with fewer total calories, improving long-term adherence to calorie-restricted diets.
Key Insight
Why It Matters
Understanding energy density empowers you to make smarter food choices that keep you full while managing your calorie intake. At Accord Medical Clinic, Dr Joseph Wang can help you build a sustainable eating plan using evidence-based principles like energy density for lasting weight loss success.
Sources
Reviewed against standard medical references.
Medically reviewed by
Family Physician & Registered Acupuncturist, Accord Medical Clinic. MBBS (NUS), Graduate Diploma in Family Medicine (NUS), Graduate Diploma in Acupuncture (Singapore College of TCM).
Last reviewed: August 2026
This page is general health education, not medical advice. Whether any treatment is appropriate for you is a decision made in consultation after assessment.