Volumetrics Diet
Feel full on larger portions by lowering the calorie density of meals.
What Is It?
Volumetrics organizes food by energy density—the calories in a given weight of food. Water-rich vegetables, fruit, soups, and lean proteins create physically generous meals with fewer calories than equally sized portions of dry, fatty foods.
How It Works
Meals start with low-energy-density foods and add moderate portions of lean protein, whole grains, and fats. Nothing is strictly banned; higher-density choices are simply used in smaller amounts. The visual size of the meal helps fullness without requiring tiny portions.
Potential upsides
- Generous-looking portions
- Emphasizes vegetables, fruit, and soups
- No complete food-group ban
- Can reduce hunger during weight loss
- Uses ordinary supermarket foods
+ Common foods
- •Broth-based soups
- •Vegetables and whole fruit
- •Lean protein and beans
- •Low-fat dairy
- •Whole grains in moderate portions
− Typically limited or excluded
- •No food is completely forbidden
- •Frequent fried foods
- •Large servings of pastries and chips
- •Calorie-dense drinks that are not filling
Sample day
An illustration, not a personal meal plan.
EVIDENCE What the research says
A year-long randomized trial found that lowering dietary energy density by adding water-rich foods improved weight loss and reduced hunger compared with fat reduction alone. The approach still depends on overall intake and long-term adherence.
Read the evidence