The idea of negative calorie foods has been floating around wellness circles for years and it keeps resurfacing for a reason. These are the crisp fruits and vegetables that feel easy to eat, naturally hydrating, and perfect for days when heavy meals sound like too much.
Whether or not you buy into the science completely, building meals around lighter produce can make eating feel more balanced and intuitive right now.
Vegetables & Leafy Greens
Vegetables and leafy greens make up the core of what people refer to as negative-calorie foods. They are extremely high in water and fiber while being naturally low in calories, meaning you can eat generous portions with minimal energy intake.
(All values are approximate and based on a raw 100 g serving, unless stated.)
Celery
~14 kcal per 100 g
Mostly water with crisp fiber. Ideal for snacking, soups, or dipping.
Cucumber
~15 kcal per 100 g
Hydrating and refreshing. Perfect sliced into salads or eaten raw.
Lettuce (romaine or iceberg)
~14–17 kcal per 100 g
Very high water content. Excellent as a salad base or wrap substitute.
Spinach
~23 kcal per 100 g
Nutrient-dense leafy green. Great raw, sautéed, or blended into dishes.
Kale
~35 kcal per 100 g
Fibrous and filling. Works well in salads, soups, or baked chips.
Broccoli
~34 kcal per 100 g
High in fiber and volume. Ideal steamed, roasted, or stir-fried.
Cauliflower
~25 kcal per 100 g
Light and versatile. Can be roasted, mashed, or used as a rice substitute.
Zucchini (courgette)
~17 kcal per 100 g
Mild and water-rich. Excellent spiralized or grilled.
Tomatoes
~18 kcal per 100 g
Juicy and low-energy. Perfect fresh, roasted, or in sauces.
Bell peppers
~20 kcal per 100 g
Crunchy and naturally sweet. Great raw, stuffed, or sautéed.
Radishes
~16 kcal per 100 g
Peppery and crisp. A refreshing addition to salads.
Cabbage
~25 kcal per 100 g
Dense and fibrous. Ideal for slaws, stir-fries, or soups.
Asparagus
~20 kcal per 100 g
Tender and filling. Best roasted or lightly steamed.
Green beans
~31 kcal per 100 g
Fiber-rich and satisfying. Easy to steam or sauté.
Carrots
~41 kcal per 100 g
Slightly higher in calories but still very low energy. Great raw or roasted.
Fruit
Certain fruits are often grouped into the negative-calorie category because they are high in water and fiber while remaining very low in energy density. While they don’t literally burn more calories than they contain, they provide volume, hydration, and natural sweetness with minimal calorie impact.
(All values are approximate and based on a raw 100 g serving, unless stated.)
Strawberries
~32 kcal per 100 g
Juicy and fiber-rich. Great for snacking or adding to yogurt and bowls.
Watermelon
~30 kcal per 100 g
Extremely hydrating and light. Perfect chilled or blended.
Grapefruit
~42 kcal per 100 g
Refreshing with a high water content. Often eaten fresh or added to salads.
Cantaloupe (melon)
~34 kcal per 100 g
Naturally sweet and water-dense. Ideal for fruit salads.
Honeydew melon
~36 kcal per 100 g
Light and refreshing. Works well as a snack or dessert base.
Peaches
~39 kcal per 100 g
Soft and juicy. Excellent fresh or sliced into salads.
Papaya
~43 kcal per 100 g
Hydrating and easy to digest. Great in breakfast bowls.
Blueberries
~57 kcal per 100 g
Higher than some fruits but still low energy and fiber-rich.
Raspberries
~52 kcal per 100 g
Very high in fiber relative to calories. Excellent for satiety.
Apples
~52 kcal per 100 g
Crisp and filling thanks to fiber and water content.
Extras
Many of these are water-rich, high in fiber, or used in small amounts to add flavor and volume without meaningfully increasing calorie intake. While they don’t literally burn more calories than they contain, they align with the idea of maximizing fullness and flavor for minimal energy.
(All values are approximate per typical serving.)
Konjac noodles (shirataki)
~5–10 kcal per 100 g
Extremely low calorie and high in soluble fiber. Useful as a pasta substitute.
Vegetable broth (clear)
~5–10 kcal per cup
Adds warmth and volume to meals with minimal calories.
Sauerkraut (plain)
~15 kcal per 100 g
Fermented cabbage that’s low energy and fiber-rich. Great as a topping.
Pickles (unsweetened)
~10–15 kcal per 100 g
Crunchy and tangy. Adds flavor without many calories.
Salsa (fresh, no added sugar)
~10–20 kcal per 100 g
Tomato-based and water-rich. Ideal as a condiment or topping.
Fresh herbs (parsley, cilantro, basil, dill)
~5–10 kcal per handful
Used in small amounts to boost flavor without meaningful calories.
Leafy microgreens
~20–30 kcal per 100 g
Light and nutrient-dense. Great for topping salads and bowls.
Seaweed (plain)
~25–35 kcal per 100 g
Low calorie and mineral-rich. Works in salads or as a garnish.
Mustard (plain)
~5–10 kcal per tablespoon
Strong flavor with negligible calorie impact.
Vinegar (apple cider, white, red wine)
~3 kcal per tablespoon
Adds acidity and brightness without calories.
FAQs
Most experts agree that true negative calorie foods do not exist. Digestion does burn calories, but not enough to outweigh the calories eaten. The main benefit comes from low calorie density rather than a net calorie loss.
The body uses energy to chew, swallow, and break down food. This process is called the thermic effect of food. It only accounts for a small portion of daily calorie burn.
They do not meaningfully increase metabolism. Any calorie burn from digestion is small and short lived. Long term metabolism depends more on muscle mass and activity.