![]() With that said, should you be incorporating whole, real foods into your meals that also have the reputation to be negative-calorie foods? Why, yes. However great this theory may sound, there is no scientific proof that it’s an effective way to diet. Should I be eating negative-calorie foods?ĭid it sound too good to be true? That’s because it is. Of course, it’s a major source of vitamin C, clocking in at 79.1 micrograms (basically the entire amount of an adult’s recommended daily allowance). Meanwhile you get 2.5 grams of fiber, 16.1 grams of natural sugars and 105.8 micrograms of vitamin A. With just 74 calories per one-cup serving (grapefruit sections plus juice), you get 18.6 grams of carbs, 1.4 grams of protein and a mere 0.2 grams of fat. This citrus star is a heavy hitter, nutritionally speaking. One clove of garlic packs a ton of flavor, but not much else! It only has 4 calories, attained from 1 single carbohydrate gram, 0.2 grams of protein and zero fat. Like several other usual suspects on the “negative-calorie” list, cucumber’s biggest nutrient, rated proportionally, is vitamin K: 17.1 micrograms. You’ll also get 3.8 grams of carbs, 0.7 grams of protein and just 0.1 grams of fat. It provides lots of hydration, of course, and 16 calories in a one-cup serving. CucumberĪlthough botanically classified as a fruit, we all think of cucumber as a vegetable. Its biggest nutrient is vitamin K, of which you’ll get 18.8 micrograms per stalk. It doesn’t contain much in the way of macronutrients: negligible amounts of protein (0.4 grams) and fat (0.1 grams) carbs clock in at 1.9 grams. ![]() One 12-inch stalk of celery contains a mere 9 calories. You’ll also get 2.2 grams of fiber and 2.8 grams of sugar, plus a significant amount of vitamin C (32.6 micrograms) and vitamin K (67.6 micrograms). One cup of chopped cabbage yields 22 calories only 0.1 gram of fat, along with 1.1 grams of protein and 5.2 grams of carbs. This cruciferous vegetable packs more nutrition into a serving-along with more calories, of course. You’ll also get 2.4 grams of fiber and almost your entire daily allowance of vitamin C (81.2 micrograms) and vitamin K (92.5 micrograms). You get 6 grams of carbs, 2.6 grams of protein and only 0.3 grams of fat. Let’s begin with an all-star on this list: One cup of chopped broccoli provides plenty of nutrition for its 31 calories. So, what exactly are the nutritional profiles of these alleged miracle foods? Let’s check them out! As you’ll see, they all do contain calories. There you have it, an apple beats a Pop-Tart again! How healthy are these negative-calorie foods? BTW, if you need another reason to eat whole foods instead of processed ones, research shows the TEF of processed meals and snacks is about 50% less than that of whole foods. Taking the bronze medal (you could’ve guessed this, right?) is fat. Of the three major macronutrients, protein has the highest TEF, meaning it burns the most calories during digestion. But don’t break out the bubbly just yet! You shouldn’t suddenly add 10% more calories into your metabolic life because you now know about it. It takes energy to chew, swallow and digest. This process is often referred to as the thermic effect of food (TEF). People use about 10% of their daily caloric expenditure (in other words, how many calories we burn on a daily basis) digesting food. Negative-calorie foods include celery, cabbage, garlic, and leafy greens, all of which have very few calories to begin with. The theory suggests that some foods cause the body to burn more calories than they actually contain. The negative-calorie food theory is based around the idea that the body uses energy to digest and process foods. What is the negative-calorie food theory? ![]() Wouldn’t it be nice to eat as much as you wanted of certain foods-and actually lose weight just from eating them?! Umm, yes! Before I break down whether these miracle goodies actually exist, let me give you a little background.
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