Weight-loss & macronutrient diets
Volumetrics diet
Prioritises foods with low energy density, lots of water and fibre per calorie, allowing large, satisfying portions for fewer calories.
What people typically eat
Soups, salads, vegetables, fruit, broth-based dishes, wholegrains, lean protein and low-fat dairy in generous portions.
What is restricted
Energy-dense foods, oils, nuts, cheese, chocolate, crisps, fried food, are limited by portion rather than banned.
Why people try it
To eat full plates and still lose weight; built specifically around satiety research.
Realistic advantages
- Directly engineered for fullness, hunger is the main reason diets fail
- No forbidden foods, which supports long-term adherence
- Encourages exactly the foods guidelines already recommend
Realistic disadvantages
- Requires cooking and food preparation
- Restaurant and convenience food is mostly energy-dense
- The category system takes some learning
Strength of evidence
Moderate evidence
Founded on solid satiety research from Penn State; supportive trial data for weight outcomes.
Likely cost and difficulty
Low-to-moderate cost; moderate difficulty.
Nutritional risks
Very low.
Who should avoid it
No specific group.
Is professional supervision advisable?
Not required.
References
Written by the Slimr editorial team. How we review diets.
