How Many Calories in a Food? You Might Be Surprised
One in three Americans are obese. Processed foods, microbes, one’s immune system, and cooking methods all play a role in how many calories are derived from our food.
One study found tha
t humans who ate 600 or 800 calorie portions of whole wheat bread (with nuts and seeds on it) and cheddar cheese actually expended twice as much energy, yes two times, in digesting that food as did individuals who consumed the same quantity of white bread and a “processed cheese product.” The end result? The net number of calories the whole food eaters received was ten percent less than the number received by the processed food eaters (because they spent some of their calories during digestion).
via The Hidden Truths About Calories.